A wheelchair user has been threatened with a knife during a failed robbery at her home in Wishaw, North Lanarkshire.
The 59-year-old woman was confronted by a man in her living room, at about 1915 BST on Tuesday.
He demanded valuables before pushing the woman after she managed to reach the front door and call for help.
The suspect is described as white and aged 16 to 19 years old. He wore a black jacket, a black hooded top, denims and black shoes.
Police said the woman initially assumed the housebreaker was one of her grandchildren as he came in through her unlocked door.
He made his way into her kitchen before threatening her in the living room.
The woman managed to make her way to the front door and shout for help before the man pushed her and ran off in the direction of the town's Netherton Road.
The woman was not injured during the failed robbery but was left very badly distressed.
Det Con Gordon Robertson, of Strathclyde Police, said: "This was a disgraceful assault on an elderly woman who has understandably been left very distressed by this incident and I am determined to find the person responsible.
"This is a very tight knit community and I have no doubt that they are upset to learn that this has happened.
"I would therefore appeal to anyone who has any information about the assault, the person responsible or who were in the area at the time to contact me."