New Delhi, July 31 : Facebook-owned WhatsApp on Tuesday rolled out its group calling feature -- for both voice and video options -- on iOS and Android devices for its 1.5 billion users.

The group calling feature supports up to four people simultaneously.

"You can make a group call with up to four people total -- anytime and anywhere. Just start a one-on-one voice or video call and tap the new "add participant" button in the top right corner to add more contacts to the call," WhatsApp said in a statement.

WhatsApp users currently spend over two billion minutes on calls per day.

"Group calls are always end-to-end encrypted, and we've designed calling to work reliably around the world in different network conditions," WhatsApp added.

At Facebook's F8 developer conference in May, WhatsApp had announced to bring group calling support on its platform.

The instant messaging service unveiled video chatting in 2016 and voice calling in 2014.

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Nagpur (PTI): A coach of the New Delhi-Chennai Grant Trunk Express caught fire in Maharashtra's Wardha district on Tuesday morning, railway officials said.

There were no casualties, they said.

Train 12616 New Delhi-Chennai (Tambaram) Grant Trunk Express left from Nagpur in the morning. While it was heading towards Sindi railway station in Wardha, smoke was detected in the last guard coach of the train at 11.09 am, Central Railway spokesperson Sanjay Muley told PTI.

The train was stopped on the Sindi-Tuljapur section, the affected coach was detached immediately, and the fire brigade was called, he said.

All passengers in the train and the coach concerned were safe, the official said.

The cause of the fire will be known after a detailed investigation.

The train will resume its journey in some time without the affected coach, the official added.