Banks was wanted for knifing a 31-year-old man aboard an uptown No. 2 train at the 14th St. subway station in the West Village about 9:40 a.m. Wednesday. The victim told cops his attacker walked up to him and started an argument, then pulled a knife and stabbed him in the back.

A knife-wielding maniac with a history of mental illness and 53 prior arrests is wanted in connection with at least two stabbings in the subway this week, The Post has learned. Cops searching for Jamar Banks were warned to use “extreme caution” when encountering him because he is believed to be armed with “a large knife,

Jamar Banks, 52, of Blake Avenue in East New York, is facing charges of first-degree assault and third-degree criminal possession of a weapon, according to a statement issued by the NYPD’s Deputy Commissioner of Public Information on Sunday.

A homeless man with more than 50 prior arrests was charged Sunday with stabbing a man aboard a Lower Manhattan subway train on New Year’s Day, police said. Jamar Banks, 52, who resides in a Brooklyn homeless shelter,