Police are looking for the attacker they said stabbed another man on the stairwell leading up to a subway train platform in the Bronx Thursday afternoon.
The attacker stabbed another straphanger during an argument on the stairs by the Elder Avenue 6 train station at about 5:30 p.m., according to the NYPD.
After the stabbing, the man walked into the emergency room at Jacobi Hospital, where he now listed in serious condition, police said.
The suspect is still at large.
