NEW YORK (CBSNewYork) — Police continued to investigate late Sunday after a man was hit in the head by a train after being assaulted at the 14th Street-Union Square subway station.

The incident happened shortly after 3 a.m. Saturday inside the station, police said. Police late Sunday said a quarrel led up to the attack.

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(Credit: NYPD)

Police say the suspects, identified as a Hispanic man and an Asian man, approached the 41-year-old victim and started punching him in the head.

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The man fell to platform floor, where he was struck by an inbound Q Train.

The victim suffered bleeding on the brain, multiple fractures to his face and skull along with cuts to his head.

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Anyone with information about the robber is asked to call the NYPD’s Crime Stoppers Hotline at 800-577-TIPS or for Spanish 1-888-57-PISTA (74782). The public can also submit tips on the Crime Stoppers Website or by texting them to CRIMES (274637) then entering TIP577. All calls are strictly confidential.