The head of Indonesia's hardline Islamic police group has been accused of being high on marijuana when he crashed his car.

The Aceh Post newspaper is reporting that a senior sharia law enforcer called Zulkarnain, was admitted to hospital after crashing into a tree.

A police officer who arrived at the scene told the paper that he found marijuana in the car.

The head narcotics detective in the area says Zulkarnain's urine later tested positive for the drug, which is strictly forbidden under sharia law.

There are also reports that Zulkarnain denied the drug use.

