Hinchingbrooke Park death: Sam Mechelewski stabbed

Murder victim Sam Mechelewski was seen in Sainsbury's in Huntingdon the night before his body was found

A man whose body was found in a park died as a result of a stab wound, police have said.

Sam Mechelewski, 20, from Huntingdon, was found dead in Hinchingbrooke Country Park on 1 February.

A post-mortem examination was carried out the following day and specialist police diving teams have searched a pond nearby for the weapon.

Cambridgeshire Police also released images of a black Audi A3 seen in the area on the evening of 31 January.

A man arrested on suspicion of Mr Mechelewski's murder has been released under investigation.

Specialist divers from the Metropolitan Police have searched for a weapon in a pond near to where the body was found

The Metropolitan Police divers have been searching a pond near woodlands and at the edge of the park.

Officers believe he was killed in a "targeted attack".

His body was found by a member of the public at about 13:00 GMT in a wooded area of the park.

Detectives want to know who was using the black Audi A3 and what they were doing in Huntingdon

Det Ch Insp Adam Gallop said: "We're appealing for anyone who has seen [the Audi A3] in the Huntingdon area to get in touch as a matter of urgency.

"It may have been parked by the side of the road."

Police arrested two people from the area on suspicion of murdering Mr Mechelewski.

A man in his 20s from Chatteris has been released under investigation.

A man from Brampton, also in his 20s, was released with no further action being taken against him.