NEW DELHI (AP) — A gas explosion in the boiler room of an Indian navy frigate has injured two civilian workers and one sailor in Mumbai’s naval dockyard, the latest accident to hit India’s navy.

Capt. D.K. Sharma, a navy spokesman, says Friday’s blast was caused by a gas leak from a welding gun that was being used during repair work on the INS Ganga frigate.

He says two civilian workers and a sailor received minor burns and were taken to a hospital for treatment.

A gas leak on an Indian navy destroyer being built at the Mumbai dockyard killed a navy commander in March, and a fire on a navy submarine killed two officers in February. The navy chief, Adm. D.K. Joshi, has resigned to take responsibility for the string of accidents.