Counterterrorism police are among those investigating a device thought to have blown up in a remote Scottish forest.

Scottish police say they were alerted to an explosion in Scotland's Garadhban Forest at noon on Wednesday. The forest is about 20 miles (30 kilometers) north of the Scottish city of Glasgow.

A spokeswoman for the local police force says the unexplained blast occurred in a wooded area and that no one was injured. She spoke on condition of anonymity Thursday.

She said that an explosives specialists and counterterror police were examining a device thought to be linked to the blast but refused to comment on the nature of the device or say whether it was being linked to terrorism or some other form of criminal activity.