The trial for an ex-Pasco police officer accused in a 1986 cold-case murder has been pushed back to April.

Richard Aguirre was charged last June in the killing of Ruby Doss, a Spokane woman working as a prostitute who was found strangled on East Ferry Avenue, a few blocks from the railroad tracks. He was working at Fairchild Airforce Base at the time of the murder. 

Aguirre, 51 remains in the Spokane County Jail in lieu of $1 million bond. He also has pending charges for voyeurism and witness tampering.

Trial for Aguirre was scheduled to begin Monday, but prosecutor Larry Haskell and defense attorney John Browne said in court Friday they need more time to prepare. Browne is requesting access to a DNA sample recovered from the crime scene to conduct an independent test, he said.

Aguirre's trial is now schedule for April 4.