Los Angeles police are investigating a strange case of a pair of lungs being found on a sidewalk by a woman.

There has been no confirmation as to whether the lungs are human or belonged to an animal, the Los Angeles Times reported Monday.

A woman made the discovery Sunday at approximately 8:30 p.m. Police said the lungs were not connected to a body.

Further tests will determine where the lungs came from.

"We don't know what they are," Sgt. Robert Dean of the Los Angeles County Sheriff'sDepartment told the newspaper. "It's really weird."

“I don’t think they’re lungs. I don’t know what it is,” said Detective Phil Martinez of the LASD Homicide Bureau. “It takes an expert to determine that. A coroner doctor has to take a look at them, and that’s not scheduled until tomorrow.”

But Martinez said the organs in question certainly looked like lungs.

“They looked like internal organs. They’d been sitting out there all day long,” he said.