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Police say an armed man dressed as Batman tried to hold up an armoured vehicle as guards were making a delivery at a bank in the Halifax area.

RCMP Sgt. Alain LeBlanc said the man approached the guards at a Royal Bank branch in Lower Sackville on Thursday around 11:20 p.m.

LeBlanc said the suspect was wearing a Batman mask with a blue hooded sweat shirt, jeans and running shoes.

"It's certainly unusual," LeBlanc said. "Certainly I don't remember someone committing or attempting an armed robbery with a Batman mask."

LeBlanc said the man, believed to be in his 20s, fled the scene in a nearby minivan.

No one was hurt.

Police continue to search for a suspect.