An Amtrak worker died and two other people were injured from a transformer explosion in New York on Thursday, authorities said.

The unidentified employee was working on a transformer at a Con Edison substation in the Van Nest section of The Bronx, the northernmost borough of New York City, when it blew around 11 a.m.

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Investigators said the worker was doing fuse work and the power was supposed to be turned off but wasn't, WABC-TV reported.

The employee was pronounced dead at the scene. Two others suffered minor injuries in the incident, according to WNBC.

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Amtrak trains to the area were delayed on Thursday while authorities investigated.