An unusually aggressive squirrel attacked three people in a German town before its last victim finished it off with a crutch, police said Wednesday.

The rodent jumped through a living-room window in Passau, on the Austrian border, on Tuesday and bit its first victim. With the squirrel hanging on by its teeth, the woman ran out into the street, where she managed to shake the animal off.

The squirrel then bit a builder before fleeing into a nearby garden, where it bit a 72-year-old man who eventually killed it with his crutch, police said.

The dead animal was to be tested for rabies.