A man's body was found in a car park in Dee Why, Sydney, with police treating the death as suspicious.

A man's body was found in a car park in Dee Why, Sydney's northern beaches, with police treating the death as suspicious. The body was discovered by a member of the public at around 7am on Monday in Ilikai Place, a dead-end street behind Dee Why lagoon. A crime scene has been established and authorities are urging anyone with information to contact Crime Stoppers.