Norfolk Police said enquiries are “ongoing” into a robbery in which the victim was reportedly threatened with a knife by three teenage boys.

A spokesman said the robbery happened in Cherry Tree Drive, West Lynn on Monday at about 6.15pm.

The victim, a man aged in his 20s, was approached by a group of up to three unknown boys. The group reportedly threatened him with a knife before demanding his possessions, the spokesman said.

An iPhone and around £140 cash was stolen. On Wednesday the spokesman said three teenage boys had been arrested and enquiries were ongoing.