SAN BERNARDINO, Calif. (AP) — Authorities are investigating after a human foot was found on a Southern California freeway.

The highway patrol says the foot was discovered Monday by a California Department of Transportation employee who was working on the center median of Interstate 210 in San Bernardino.

Officials say the foot was not in a sock or shoe and may have belonged to a woman.

The Sun newspaper says no other human remains or clues were found after an extensive search of the area. No patients missing a foot were reported at nearby hospitals.

The body part was turned over to the coroner’s office.