A gang of three men threatened a 14-year-old boy at "knife-point" during an alleged robbery in Northfleet.

The attack took place in Coldharbour Road between 2pm and 3pm on Friday.

A police spokeswoman said officers were now investigating.

She said: "It is reported that three men threatened a 14-year-old boy and stole his mobile phone. One of the men is alleged to have been in possession of a knife."

It is not known whether the boy was hurt during the crime.