A 74-year-old man has been attacked and threatened with a chisel.
The assailant called at the man's home in Lockleaze Road, Bristol at 1850 BST on Monday, asking to use a toilet.
The same man was then spotted at the side of the property. When the pensioner challenged him he knocked him to the ground.
The man then produced a chisel from a rucksack and threatened the victim, who shouted for help and managed to escape inside.
The 74-year-old was pursued by his attacker, who attempted to force open the front door, smashing a glass panel, before running off.
The offender is described as of mixed race, 6ft tall and of an athletic build.
He was in his mid-20s and wore a red and white knitted hat, blue and white T-shirt, blue shorts and trousers.
Police are asking anyone with information about the attack to contact them.