A teenager was attacked by a group of boys and stabbed while riding his bike.
The 15-year-old was attacked by four boys while cycling in Waylen Street, Reading, Berkshire, at around 10:20 GMT on Wednesday.
He was taken to the Royal Berkshire Hospital where he remains in a stable condition with non-life threatening injuries, Thames Valley Police said.
A boy, 15, has been arrested on suspicion of grievous bodily harm and remains in custody, the force added.
Det Insp Dave Turton said: "At this stage we do not believe that this was a random attack and that the victim and the offender are known to each other."
He appealed to anyone who may have CCTV or dash cam footage to contact police.