A homicide investigation was launched after the discovery of the body yesterday.
It is understood the man died a violent death.
His body was found by a group of Filipino fishermen who reported the grim discovery to Christchurch police yesterday morning.
A local, who did not wish to be named, noticed a brown Holden stationwagon twice stop outside his Lake Rd property at the weekend.
It struck him as unusual because it was on a bend.
The first time the car stopped, they spent about five minutes there. The second time was a quick stop and go, he said.
He didn't see the vehicle's occupants.