Three teenage boys have been arrested on suspicion of committing a series of robberies in Dartford, including mugging a 15-year-old boy at knifepoint.

Officers have been carrying out enquiries following reports of three robberies in the town in just over a week.

A 15-year-old boy was walking home from school when he was approached by three people on a nearby footpath. It is believed the victim was threatened with a knife and his mobile phone and iPod were taken.

Police were called to the incident in Princes Road just after 4pm on Thursday, April 23.

This followed a report that a 28-year-old man was assaulted in an alleyway off Mallard Close on April 19 just after 11pm.

He suffered cuts to his lips and cheeks and £75 cash and a bag was taken from him.

A third assault saw a 29-year-old man taken to hospital with head injuries and his phone and wallet taken after being surrounded by a small group of people.

The incident took place in the Temple Hill area between 12.45am and 1.05am on April 15.

A 17-year-old from Bexley, a 17-year-old from Sidcup and a 15-year-old from Swanscombe, were arrested on suspicion of robbery and bailed until 15 June pending further enquiries.