Two separate subway attacks happened within 30 minutes of each other Tuesday night, police say.

The first incident took place at the 34th Street-Herald Square station around 10 p.m. Police say a suspect asked a man on the train for a cigarette and then went to rob him, leading to a fight. The victim was stabbed twice before the suspect took off.

The NYPD says a man on a train heading to Union Square randomly attacked a woman by hitting her in the head with an object. A bystander tried to intervene and was also hit in the head before the attacker ran off.

All of the victims are expected to be OK. There is no word on the location of the suspects.