A Bay Area Rapid Transition station was closed Monday after a severed foot was found on the tracks, authorities said.
The macabre discovery was made by subway workers and briefly shut down a Berkeley, California, station while the remains were collected.
The body part is believed to belong to a woman who fell onto the tracks 22 days ago and lost part of her leg, officials said.
The woman survived.
A professional service disposed of the foot, the Los Angeles Times reported.