Suspect on loose after 2 slashed in Harlem subway station

Two men were slashed in an altercation at a South Harlem subway station Thursday — the latest in a year-long uptick in transit attacks.

The violence erupted after one of the victims got into a dispute with the suspect, who pulled out a knife and slashed the man’s left arm on the 2/3 line shortly before 8 p.m., law enforcement sources told The Post. As the culprit fled, he slashed a second man in the left forearm before running off, sources said.