Someone cut off the head of a sea lion in Northern California and rode off with it in a bag. Authorities are now offering $20,000 for information that helps find the perpetrator.

NOAA officials are looking for a suspect seen using a black 8-inch knife to remove the deceased sea lion's head.

The suspect was seen using an 8-inch black knife to remove the sea lion’s head, placing it in a clear plastic bag, and riding away, authorities said.