A 14-year-old wearing a Joker costume was arrested at his Queens school on Thursday after he threatened to “kill people after school,” law enforcement sources told The Post.

The Joker costume-wearing 14-year-old arrested at his Queens school Thursday for threatening to "kill people after school" will not be charged — because cops determined his threats were all a hoax.

A 14-year-old boy dressed in a Joker costume threatened to shoot up his school on Halloween Thursday, police said. Officials at the High School for Arts and Business on Horace Harding Expressway ne… ...

Batman: Arkham Knight Batgirl DLC first trailer features old-school Harley and Joker. WBIE has released the first trailer for Batgirl: A Matter of Family today, and it looks like we're going to be ...