A 13-year-old boy was treated in hospital after he was robbed at knifepoint during a park's 'family fun day'.
The boy was cornered by two men in Leicester's Knighton Park on Sunday afternoon.
The men threatened the boy with a knife and took his phone.
Police said the boy was injured in the attack, which happened at 2.30pm.
The exact nature of his injuries was expected to become clear when he speaks to detectives tomorrow.
The incident happened in a different area of the park to the annual family fun day, organised by Leicester City Council.
A Leicestershire Police spokeswoman said today: "Two men approached the 13-year-old boy and one of them grabbed his phone.
"At some point during the incident the boy was threatened with a knife and sustained minor injuries.
"Inquiries are ongoing and officers are appealing for witnesses."
Contact Det Con Andy Day on 101 or Crimestoppers, which is anonymous, on 0800 555 111.
