Man's body found below cliff in Sydney

A man's body has been found at the bottom of a cliff on Sydney's northern beaches and police are looking for one of the last people to have seen him alive.

The body of Ryan Foster, 26, was found at Careel Headland Reserve on Saturday morning and police believe he was with two men shortly before he died.

One man has been interviewed but officers are looking for a second, who was last seen travelling in a green hatchback.

It's not believed Mr Foster's death is suspicious and police are appealing for information as they investigate the final moments of his life.