Officers responded to a house at 211 Hudson Landing Road at about 9:45 p.m. where a stabbing at a party had reportedly left three men seriously injured, according to the sheriff's office.
Watsonville resident Eleazar Figueroa, 29, had sustained a fatal knife wound in the chest and was pronounced dead at the scene by medical personnel, the sheriff's office reported.
Edgar Rodriguez, 19, and Alfonso Escoto, 33, both from Watsonville, were airlifted to Santa Clara Valley Medical Center in San Jose suffering stab wounds.
Rodriguez was reported to be in critical condition.
Escoto was released into the custody of investigators after being treated for minor injuries, and was subsequently booked into Monterey County Jail on charges of murder and attempted murder, according to the sheriff's office.
The stabbing is under investigation, and anyone with information is asked to contact Investigator Brett Speirs or Investigative Sgt. Terry Kaiser at (831) 755-3772, or the anonymous tip line at (888) 833-4847.