A man was killed less than an hour after leaving Yankee Stadium when he climbed on top of a Connecticut-bound train and hit overhead electrified wires in Mamaroneck on Wednesday night, officials said.

Metro-North Railroad officials said the victim was Michael Vigeant, 24, of Hudson, New Hampshire.

A conductor saved Vigeant's brother as the pair, decked out in Boston Red Sox gear, climbed up onto a train car, but Vigeant ended up getting to the top, said Michael Pellicci, a Stamford resident who was on the train.

"He saw the second brother and grabbed him," Pellicci said.

Then there was a "red flash," Pellicci said, as Vigeant hit the wires.

The incident happened around 11:30 p.m. between the Larchmont and Mamaroneck stations and stranded passengers on a train packed with Yankees and Red Sox fans for more than two hours after leaving Wednesday night's game. New Haven Line service was delayed until about 3:20 a.m.

First responders who were passengers on the train rushed to perform cardiopulmonary resuscitation on Vigeant while people supported his brother, Pellicci said.

"I give those guys credit because they worked on his brother the whole time until those paramedics came," Pellicci said. "They didn't stop. There were doctors and nurses that were volunteering their help."

Metro-North officials said Vigeant died at a nearby hospital.

Pellicci said the brothers had climbed to the top of a train car earlier while it was stopped, but that it was moving the second time.

When Vigeant was struck, the train stopped because of a power issue and the crew found him after he had come into contact with the overhead catenary wires, Metro-North officials said.

Metropolitan Transportation Authority police are investigating.

Metro-North officials said passengers were on the stopped train for about 45 minutes until they were transferred onto a different train, and that passengers reached their final destination in New Haven 105 minutes late. Passengers tweeted that they were stuck at the spot between Larchmont and Mamaroneck for more than two hours before moving again toward Connecticut.

On Twitter, people complained about the hot, humid conditions on the train, with some asking Metro-North to open the doors so they could get fresh air. There was no air conditioning while the train was stopped because of the power problem, people tweeted.

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Twitter: @MattSpillane