Due to new developments, investigators are now looking for 58-year old Pete Reyna and 37-year old Mark Valdivia.
Authorities want to question the men in connection with the murder of 34-year-old Salvador Valdovinos.
Detectives found Valdovinos' body in a 4-foot deep grave outside Hanford city limits in January.
They arrested two people, John Reyna, and Joe Trejo, in January.
RELATED: Hanford Police used photos from New Year's Eve party to track down murder suspects
They believe Reyna shot and killed Valdovinos after an argument at the New Year's party, hosted by Trejo.
Police say Trejo helped Reyna move and bury Valdavinos' body.
Pictures from the party helped police track down people who were there.