Detectives are appealing for witnesses after a series of robberies in Woodford Green.
The latest offence occurred on Sunday, January 24 at approximately 16:00hrs in the Roding Valley Park area, where a woman was robbed at knife point.
The victim was walking on Roding Valley Park Trail whilst talking on her phone when a man approached her and threatened her with a knife.
He shouted at her to hand over her phone and the security details to the phone. The victim handed her phone over to the suspect and the suspect began to run away.
Some passers-by witnessed this incident and so attempted to chase the suspect. The suspect eventually threw the phone onto a path and continued to run away.
The suspect is described as a black man, aged around 18-years-old, and wearing a black hat and black clothing with a possible blue stripe down the side of his tracksuit bottoms.
Police are asking for any witnesses to this incident or anyone with information that may help to call 101 quoting reference 4401456/21
To remain anonymous, call Crimestoppers on 0800 555 111 or contact them via crimestoppers-uk.org.