The body of the unidentified man, aged about 40 years, was found this morning along a road in MV-90 area with his throat slit and head smashed, they said.
The man was believed to have been killed somewhere else and his body thrown at the site by the assailants, police said.
A piece of paper was found near the body carrying a message that the man was killed as he had been operating in the area as an informer of the security forces.