Police say the 13-year-old was approached by the group, who stole his phone and a bank card.
The incident is said to have happened in the Above Bar Street area of Southampton.
Offices say the incident took place around 5.40pm on Tuesday, October 23.
Police say the group were in the area on Sunday and Monday as well.
Anyone with information is asked to call Hampshire Constabulary on 101, quoting reference: 44180399379
Source : DailyEcho