Bengaluru, Dec 5: A suspected cylinder blast killed a 32-year old technician and injured three others during an experiment in the aero-dynamics laboratory of the Indian Institute of Science (IISc) here Wednesday, police said.

Four technicians of a private start-up company were involved in some experiment at the laboratory when an explosion occurred suddenly at around 2.20 pm, they said.

Technician Manoj from Mysuru died on the spot while three others suffered injuries.

The injured have been admitted to a private hospital where their condition was said to be stable, police said.

Though the nature of explosion and its cause were yet to be established, it was suspected that the incident occurred due to a blast in a cylinder containing some gas, they said.

Assistant Commissioner of Police Niranjan Raj Urs told PTI that the start-up company Superwave Technologies Private Limited was having a tie-up with the IISc for carrying out experiments pertaining to its research.

"Forensic experts would ascertain the actual cause of the accident but it seems like a cylinder blast," he said.

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Vadodara: The main accused in the March 14 car crash in Vadodara, Rakshit Chaurasia, had smoked marijuana but was not under the influence of alcohol, according to the primary report from Gandhinagar’s Forensic Science Laboratory (FSL). Chaurasia, a 20-year-old law student, was driving a speeding car that rammed into two-wheelers near Muktanand crossroads in Karelibaug, killing a woman and injuring several others.

The FSL’s findings, as cited by police officials, revealed that Chaurasia’s blood sample tested positive for marijuana. Two others who were in the car with him—Praanshu Chauhan and Suresh Bharwad—also tested positive for the same. All three have been booked under the Narcotic Drugs and Psychotropic Substances (NDPS) Act, 1985.

Chaurasia has also been booked under s. 185 of the Motor Vehicles Act, 1988, which deals with driving under the influence of alcohol or drugs. He is currently lodged in Vadodara Central Jail. Chauhan has also been arrested, while Bharwad remains absconding.

According to Deputy Commissioner of Police, Zone 4, Panna Momaya, the blood reports confirmed drug consumption. "They were driving the car after smoking marijuana," she said.

CCTV footage showed the car speeding before taking a sharp turn and hitting the two-wheeler. In the moments before the crash, Chaurasia was seen behaving erratically, shouting "another round, another round," followed by chanting “Om Namah Shivay” and calling out a girl’s name, “Nikita.”

Later, Chaurasia told reporters that a pothole caused the accident and claimed he was driving at 50 km/hr. He also said the airbag deployment had obstructed his view.