It was a bloody weekend for the MTA and the New York City subway system. Four men have reportedly died in New York due to unrelated subway mishaps less than 24 hours apart.

Around 8:25 a.m., Brian Omara of Garden City was standing on the track between Union Square and Third Avenue. He was struck and killed by the incoming L train and was pronounced dead at the scene. Authorities are unsure why he was standing on the tracks, reported the New York Post.

Later that day, around 4 p.m., a Crown Heights man was hit by an A train at Nostrand Avenue in Brooklyn. The man reportedly works at the station, selling Metrocards. His body was discovered by the train conductor. There were no witnesses and police are unsure if any criminality is related to this case.

Another man was killed when he became pinned by an oncoming L train and the subway platform. At the Sixth Avenue station, around 10 p.m. at night. The force of the train caused his head to become severed from his body.

A fourth man was found dead in Queens around 2 a.m. The unidentified man, who reportedly is in his 60s, may have fallen down the stairs, said police. Police do not believe criminal activity played a role in his death.