An elderly woman was taken to hospital in a critical condition after she was robbed and attacked by two youths as she left a supermarket.
The 82-year-old, who walks with the aid of a stick, was mugged by the pair as she left a Morrisons supermarket in Palmers Green in Enfield, north London, shortly after 1pm yesterday, police said.
She was knocked to the ground as they stole her purse, leaving her with head injuries and serious bruising to her face.
An air ambulance took her to a central London hospital in a critical condition, where she is now stable.
The two male youths involved are believed to be in their late teens or early 20s. No arrests have been made.
Detective Constable Ryan Clark, who is leading the investigation, said: "This was a callous attack on a vulnerable member of the community who was out in the middle of the day shopping for groceries.
"There would have been a lot of people in the area at the time. My team is keen to hear from anyone who saw anyone suspicious and in particular two youths making off from the scene of the attack."
Anyone with information or who witnessed the attack is urged to call police on 101 or Crimestoppers on 0800 555 111.