A 92-year-old woman had her purse stolen as she walked down Lefroy Road yesterday morning.
At around 10.40am, the woman was walking towards Shepherd Street when a man approached her.
Police allege the man bumped into her, grabbing the walking frame she was using and stealing the woman�s purse.
Fremantle detectives say the man ran off with the purse down Shepherd Street and into a dark older model sedan with patchy paintwork before driving away.
The man is described as dark skinned, between 15 and 18 years old, approximately 180cm tall with a thin build.
He was wearing a long sleeved shirt, knee length shorts and runners.
Anyone with information is asked to call Crime Stoppers.