Cellphone records indicate Betsy Arakawa, wife of actor Gene Hackman, was alive a day after her estimated time of death, a New Mexico sheriff's official said Monday.

Investigators in Santa Fe, New Mexico have learned new information related to the deaths of actor Gene Hackman and his wife Betsy Arakawa that has changed the timeline of their final days.

More details -- including an altered timeline -- are emerging as officials continue to investigate the tragic deaths of actor Gene Hackman and his wife, Betsy Arakawa, who were both found dead in their Santa Fe, New Mexico, home in February. Here's the timeline of the case: "Last Days of Gene Hackman" airs Tuesday, March 18, at 10 p.m. ET on ABC.