MINNEAPOLIS -- Emergency workers found 10 pounds of marijuana and a human skull at the home of a man who had just died of natural causes, reports CBS Minnesota.

According to the station, the sheriff's office said a 911 operator received a report of an unresponsive man Tuesday morning in the Forest City Township of Meeker County.

The man, 77-year-old James Webster, was pronounced dead at the scene, but what the crew observed at the home led them to call in the law.

Deputies seized marijuana and more than $1,000 in cash, as well as a human skull -- which is being investigated by the Midwest Medical Examiner's Office, according to CBS Minnesota.

Investigators are also interviewing a 70-year-old woman who lives in the home, according to the station.