Three eagle-eyed cops busted a Brooklyn bank robber yesterday still carrying the $8,000 he had stolen, law-enforcement sources said.

Kevin Crawford, wearing a Halloween mask, allegedly passed a demand note to a teller at a Dime Savings Bank in Borough Park Tuesday and fled with $2,000.

Yesterday, he paid a second visit to the bank, said “Happy Halloween’’ and demanded $4,000.

A frightened teller gave him $8,000.

A description was broadcast and Detective Mike Milici, Officer Joseph Vitella and Sgt. Michael Andreano spotted him three blocks away, where they made the bust.