SANTA FE, N.M. (AP) — Authorities are set to reveal more information about an investigation into the deaths of actor Gene Hackman and wife Betsy Arakawa, whose partially mummified bodies were discovered last month at their home in New Mexico.

The Santa Fe County Sheriff’s Office has said it does not suspect foul play, and tests for carbon monoxide poisoning were negative.

Sheriff Adan Mendoza and state fire, health and forensics officials scheduled an afternoon news conference Friday to provide updates on the case.

Mendoza has said the couple may have died up to two weeks before they were discovered on Feb. 26. Hackman’s pacemaker last showed activity Feb. 17, nine days before maintenance and security workers showed up at the home and alerted police.

Arakawa was found with an open prescription bottle and pills scattered on the bathroom counter, while Hackman was found in the home’s entryway.

One of the couple’s three dogs also was found dead in a crate in a bathroom closet near Arakawa, while two other dogs survived. Authorities initially misidentified the breed of the dead animal.

Authorities retrieved personal items from the home including a monthly planner and two cellphones that will be analyzed. Medical investigators have been working to establish the cause of their deaths, but toxicology reports often take weeks to complete.