A Northland woman tried to foil a robbery by pushing a shopping trolley across the fleeing suspect's path as he sprinted out of Mangonui's Four Square with cash wrested from the till.
Her trolley hit him in the knee, causing him to panic and forget about his accomplices waiting in a getaway car in the loading zone just outside.
He managed to escape on foot and his associates picked him up later - but police have a good description of the alleged offender and the car. They also have CCTV footage which may identify him.
Constable Tim Murdock, of Mangonui police, said the offender reached across the store counter about 2.45pm on Wednesday and tried to grab some cash while the till drawer was open.
The shopkeeper slammed the drawer on the offender's hand and a struggle ensued, causing the till to fall on to the floor.