Apparently, a Russian ninja had been terrorizing the hillside of Italy, until a feisty old pensioner got 'im:
The old man came down the stairs but tripped on the last step letting off his rifle.
Startled, the "ninja" made his escape, hopping onto a bicycle and racing off into the nearby cornfields - followed by police who were quickly on the scene. Police eventually trailed him to an abandoned farmhouse where he was arrested.
He was later identified as Igor Vaclavic, a former soldier from the Russian army. He was caught carrying night scopes and a head torch. When asked about his chosen disguise, he told police he had been inspired by his boyhood idol - Robin Hood.
Link - Thanks David R and moronic50!