A schoolboy was threatened with a knife by two teens who wanted his phone and cash.
The boy, 14, was in St Thomas Road at 12.10pm when the would-be robbers approached him.
Luckily the area was busy and a passer-by disturbed the offenders who realised they were attracting attention and fled the scene empty-handed, running towards Stopsley High School.
Both offenders are described as white boys, 16 or 17 years old, and one had a ‘slight moustache’.
Det Con Joanna Bosson said: “Clearly the offenders had second thoughts when a member of the public approached them asking what they were doing. It is this person and other people who were in the area who we need to contact us to assist with this investigation.”
Call Det Con Bosson on 01582 394441 or 101 with information.