Two drunk men are thought to be behind the terrifying attack, which took place as the little boy walked to a shop at around 8pm on 11th June.
As the boy walked along Steele’s Road in London’s Belsize Park, the two men dragged him into bushes that were close by and began molesting him.
When the boy started screaming, his attackers panicked and fled the scene.
The little boy rushed home and told his mother what had happened to him.
She then contacted the police.
A spokesman for the Metropolitan Police said: “Police were contacted by the mother of a 10-year-old boy who alleged he had been sexually assaulted by two men in the vicinity of Haverstock Hill, at the junction with Steele’s Road, NW3.
“The boy was not injured.”
They added: “Officers from the Sexual Offences, Exploitation and Child Abuse Command are investigating. No arrests, enquiries continue.”
Anyone with information about the attack, which took place at about 8pm on June 11, can call the Metropolitan Police on 020 8733 6545 or Crimestoppers anonymously on 0800 555 111.