Gang in sex attack on man in Wrest Park, Bedfordshire
A 41-year-old walker was sexually assaulted by a gang of up to four men in woods at a park in Bedfordshire.
The attack happened at Wrest Park near Silsoe on Friday.
The victim was walking alone at about 13:00 BST when he was grabbed from behind and sexually assaulted. He suffered minor injuries.
"The victim describes between three and four male offenders who then ran off in an unknown direction," a police spokesman said.
After the assault the victim returned to his home nearby and called police at about 15:00 GMT.
Police said an extensive area search was carried out in the woods and a full forensic investigation was under way.
Det Sgt Terry Davis said: "If anyone was in or around the Wrest Park woods between 13:00 and 13:30 GMT on Friday, please come forward.
"You may have seen something that could help with the investigation.
"We would advise people to be extra vigilant when out walking alone and always be mindful of your personal safety and report any activity you think is suspicious."