A bank robber on a spree in Brooklyn disguised in a red Halloween skull mask who declared, "Happy Halloween, motherfucker!" before pulling a gun on a teller on Wednesday was arrested with the aid of civilian volunteers, according to a Sunday report in the New York Post.

Borough Park Shomrim volunteers tracked down 20-year-old Kevin Crawford, who allegedly struck the Dime Savings Bank in Williamsburg on Tuesday and the  Emigrant Savings Bank in Fort Greene.

On Tuesday, Crawford allegedly tried to open an account with a check for 17 cents at the Dime Savings Bank, but left after the teller refused his request. He allegedly returned later with a note that read, "Give me the money out of the register. I will kill you bitch." Crawford allegedly left the bank with  $1,960.

During the robbery on Wednesday, Crawford allegedly told the teller, "Trick or treat, give up the cash or I will kill you, bitch motherfucker." When the teller didn't immediately respond to the request, the robber fled empty-handed.

The Shomrim volunteers patrol the borough to aid with nabbing vandals, robbers and perpetrators of anti-Semitic attacks, but they do not have the authority to make arrests.

Crawford has been charged with robbery and attempted robbery.