Brooklyn Subway Shooting News Live Updates: Gunman opens fire on Brooklyn subway; at least 10 shot

A gunman in a construction vest donned a gas mask, set off a smoke canister on a rush-hour subway train and shot at least 10 people Tuesday morning, authorities said. The shooter was at large and described as dangerous after leaving wounded commuters bleeding on a Brooklyn platform while others ran screaming.

Five people were in critical but condition but expected to survive. At least 16 in all were injured in some way in the attack that began on a subway train that pulled into the 36th Street station in the borough’s Sunset Park neighborhood.

Police Commissioner Keechant Sewell said the attack was not being investigated as terrorism, but that she was “not ruling out anything.” The shooter has not been identified and the motive remains unknown.

“My subway door opened into calamity. It was smoke and blood and people screaming,” eyewitness Sam Carcamo told radio station 1010 WINS, saying he saw a gigantic billow of smoke pouring out of the N train once the door opened.

The attack unnerved a city on guard a bout a rise in gun violence and the ever-present threat of terrorism. It left some New Yorkers jittery about riding the nation’s busiest subway system and prompted officials to increase policing at transportation hubs from Philadelphia to Connecticut.