Tokyo (AP): A powerful 7.5 magnitude earthquake struck off northern Japan late Monday, injuring 23 people and triggering a tsunami in Pacific coast communities, officials said. Authorities warned of possible aftershocks and an increased risk of a megaquake.

The Japanese government was still assessing damages from the tsunami and late-evening quake, which struck at about 11:15 p.m. in the Pacific Ocean, around 80 kilometers (50 miles) off the coast of Aomori, the northernmost prefecture of Japan's main Honshu island.

“I've never experienced such a big shaking,” convenience store owner Nobuo Yamada told the public broadcaster NHK in the Aomori prefecture town of Hachinohe, adding that “luckily” power lines were still operating in his area.

A tsunami of up to 70 centimeters (2 feet, 4 inches) was measured in Kuji port in Iwate prefecture, just south of Aomori, and tsunami levels of up to 50 centimeters struck other coastal communities in the region, the Japan Meteorological Agency said.

The Fire and Disaster Management Agency said 23 people were injured, including one seriously. Most of them were hit by falling objects, NHK reported, adding that several people were injured in a hotel in Hachinohe and a man in Tohoku was slightly hurt when his car fell into a hole.

The meteorological agency reported the quake's magnitude as 7.5, down from its earlier estimate of 7.6. It issued an alert for potential tsunami surges of up to 3 meters (10 feet) in some areas and later downgraded to an advisory.

Chief Cabinet Secretary Minoru Kihara urged residents to go to higher ground or seek shelter until advisories were lifted. He said about 800 homes were without electricity, and that the Shinkansen bullet trains and some local lines were suspended in parts of the region.

Nuclear power plants in the region were conducting safety checks, Kihara said. The Nuclear Regulation Authority said about 450 liters (118 gallons) of water spilled from a spent fuel cooling area at the Rokkasho fuel reprocessing plant in Aomori, but that its water level remained within the normal range and there was no safety concern.

About 480 residents were taking shelter at the Hachinohe Air Base, and 18 defense helicopters were mobilized for a damage assessment, Defense Minister Shinjiro Koizumi said.

About 200 passengers were stranded for the night at New Chitose Airport in Hokkaido, NHK reported.

The meteorological agency issued a caution about possible aftershocks in the coming days. It said there is a slight increase in risk of a magnitude 8-level quake and possible tsunami occurring along Japan's northeastern coast from Chiba, just east of Tokyo, to Hokkaido. The agency urged residents in 182 municipalities in the area to monitor their emergency preparedness in the coming week.

Satoshi Kato, a vice principal of a public high school in Hachinohe, told NHK that he was at home when the quake struck, and that glasses and bowls fell and smashed into shards on the floor.

Kato said he drove to the school because it was designated an evacuation center, and on the way he encountered traffic jams and car accidents as panicked people tried to flee. Nobody had yet come to the school to take shelter, he said.

Prime Minister Sanae Takaichi said in brief comments to reporters that the government set up an emergency task force to urgently assess the extent of damage. “We are putting people's lives first and doing everything we can,” she said.

Later, she urged residents in the region to pay attention to the latest information from local municipalities. “Please be prepared so you can immediately evacuate as soon as you feel a tremor."

The quake struck about 80 kilometers (50 miles) northeast of Hachinohe, and about 50 kilometers (30 miles) below the sea surface, the meteorological agency said.

It was just north of the Japanese coast that suffered the magnitude 9.0 quake and tsunami in 2011 that killed nearly 20,000 people and destroyed the Fukushima Daiichi nuclear power plant.

“You need to prepare, assuming that a disaster like that could happen again," the meteorological agency's earthquake and volcano division official Satoshi Harada said.

At 6:20 a.m. on Tuesday morning, authorities lifted all tsunami advisories for the Pacific coastline in northern Japan, NHK said.

The US Geological Survey reported another earthquake, with a magnitude 5.1, early on Tuesday, about 122 kilometers (76 miles) south of Honcho, at a depth of 35 kilometers. No other details were immediately available.

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New Delhi (PTI) A day after a 50 per cent rise in commercial LPG cylinder prices, Delhi's food business, with restaurant owners and street vendors have warned of higher menu rates, financial strain and potential job losses if the trend persists.

The price of commercial LPG was hiked by a steep Rs 993 per 19 kg cylinder, marking the third consecutive monthly hike amid rising global energy prices linked to the West Asia conflict.

For many in the restaurant industry, the spike has been both sudden and steep.

Manpreet Singh, honorary treasurer of the National Restaurant Association of India, said that eateries are already grappling with supply challenges alongside rising costs.

"There is a huge difficulty in getting these cylinders, and black marketing is also increasing in many unregulated sectors," he said, noting that prices that were once around Rs 1,600, often dropping to nearly Rs 1,300 with discounts, have now surged to between Rs 3,000 and Rs 4,000 per cylinder.

He further added that a medium-sized restaurant typically uses between two and five cylinders daily, making the increase particularly burdensome as costs mount.

Singh further said that as costs mount, smaller establishments could struggle to stay afloat. Instead, the association has advised restaurants to shift towards piped natural gas connections through Indraprastha Gas Limited as a more sustainable alternative.

"If this problem continues, PNG is the only long-term solution," he said, adding that temporary measures like coal offer limited relief due to slower cooking times and that it can largely be used only for tandoors.

Echoing similar concerns, Kabir Suri, owner of Mamagoto in Khan Market, said the impact is already visible across the industry. "There has been almost a threefold increase in cylinder prices for restaurants," he said, adding that rising fuel and logistics costs are compounding the pressure.

"If this continues, it will become a significant financial burden, and food prices will inevitably go up. Adding to this burden, higher fuel costs are also affecting logistics and transportation, making a price rise unavoidable. The extent of the impact will vary between small eateries and large chains depending on their scale," he said.

Global oil prices have surged nearly 50 per cent following disruptions in energy supply chains due to the West Asia conflict, pushing up commercial fuel costs and transport expenses.

A West Delhi-based restaurateur said they are trying to manage rising costs while keeping their staff secure. "We are trying to ensure that our staff, from kitchen workers to waiters, are paid on time and do not face immediate hardship," the owner said.

"We are a small restaurant with seating for about 20 to 25 people at a time. But if this continues for long, we will have to take difficult calls. There is only so much we can absorb, and menu prices will have to go up. We hope this does not continue for a longer period," he said.

Another restaurant owner in North Delhi, who did not wish to be named, said operational adjustments alone may not be enough. "We are checking our costs very carefully and trying to cut wherever possible, but if fuel prices remain high, it will eventually affect how we run the business," the owner said.

"Coal helps in tandoor cooking, but it takes more time," the owner further added.

The strain is even more acute among street vendors, many of whom operate on thin margins. A vendor in Saket said he had recently expanded his business, moving from a mobile cart to a rented outlet.

"I have a family to feed and more responsibilities now. Earlier, I managed with a moving cart, but after renting the place, expenses increased," he said. "Whenever cylinders were unavailable, I had to buy them at higher rates in the black market. Now even regular supply is too expensive, and if this continues, we may have to shut down," he added.

In Laxmi Nagar, another vendor said they are struggling to keep the business running. "Sometimes we even used domestic cylinders from home when supply ran out because we had to keep the stall running," he said, adding that rising costs leave little choice but to increase prices or bear losses.

On April 1, the rates of commercial LPG cylinders were hiked by Rs 195.50 per cylinder, followed by a Rs 114.5 hike on March 1, taking the total increase over the past three months to Rs 1,303. With the latest revision, a 19 kg commercial LPG cylinder now costs Rs 3,371.5 in Delhi, up from Rs 2,078.5 earlier.

The prices of domestic LPG cylinders used for household cooking have remained unchanged. They were last increased by Rs 60 per 14.2 kg cylinder on March 7 and currently cost Rs 913 in Delhi.