Authorities are investigating an incident in which two dead pigs were dumped in the Muslim section of a Baldivis cemetery.

Two pigs' heads and a pile of entrails were left beneath a sign denoting the Muslim burial area of Rockingham Regional Memorial Park.

The scene at the cemetery in Baldivis. Credit:6PR

Cemetery staff discovered the carcasses on Monday morning and notified police, the City of Rockingham and Muslim community leaders.

"This is the first incident of its kind at the park and it is being treated as an isolated occurrence," a spokesman for the Metropolitan Cemeteries Board said.