U.S. border officials are trying to figure out what to do with a human brain seized from a Canadian mail truck that came from Toronto.

The brain was found on Valentine’s Day in a clear glass mason jar with no paperwork.

Officials say they discovered it during a routine check at the border crossing between Sarnia and Port Huron, Michigan.

The agency says the manifest had the brain listed as an “antique teaching specimen” and it was heading for Kenosha, Wisconsin.

Their specialists are talking to the U.S. Centers for Disease Control and Prevention to try and figure out what to do with the brain.

Photo courtesy US. Customs and Border Patrol – Twitter