Four people were killed, two on the L train in Manhattan, in four separate accidents in the city transit system on Saturday. Please be careful when riding the subway it can get dangerous. Click below to find out more.

@WiLMajor

At about 10 p.m., straphangers were greeted by the gruesome scene of a man’s head wedged between the train car and the platform when they stepped off the L train at the Sixth Ave. subway station.

Cops could not say how the man became pinned by the train.

Earlier in the day, at the nearby 14th St. station, just one stop west on the L line, Brian O’Mara, 22, of Long Island man was struck and killed while wandering around inside a tunnel between stations about 8:30 a.m., said police. It is unclear what he was doing in the tunnel, said cops.

In Brooklyn, an unidentified man was struck and killed by an A train at the Nostrand Ave. station at Fulton St. in Flatbush about 4:30 p.m., police said. The man was not carrying identification and it’s also not clear what he was doing on the tracks, said police.

Around 2 a.m. on Saturday, a man in his 60s was found unconscious at the bottom of the elevated Elmhurst Ave. station at Broadway on the R line, in Elmhurst, Queens, said a police source.

The man was bleeding from the mouth, said a police source.

He was taken to Elmhurst Hospital Center, where he died about 3 a.m.

Investigators believe the victim slipped and tumbled down the steps, striking his head, said a police source. It does not appear he was the victim of a crime, according to the source.

Cops did not release the names of the other victims pending notification of family.

DN