Law enforcement sources say five people were shot at a subway station in Brooklyn, New York.

Fire personnel responding to reports of smoke Tuesday morning at the 36th Street station in Sunset Park found multiple people shot and unexploded devices.

The fire department said 13 people were injured, but no details were provided.

A photo from the scene showed people tending to bloodied passengers lying on the floor of the station.

According to multiple law enforcement sources briefed on the investigation, preliminary information indicated a suspect was wearing a construction vest and a gas mask.

Further details were not immediately available. Trains were delayed.

15 Ways You Can Help People in Ukraine Right Now

As Americans watch events unfold in Ukraine, many wonder how they can help. Below is a list of organizations responding to the crisis in Ukraine along with information on how you can support their various missions.