abc news reporter alison kosik has the latest from investigators and an expert's theory on the actor. >> overnight. legendary actor gene hackman remembered at the oscars. >> our community lost a giant, and i lost a dear friend. gene hackman. >> the 95 year old two time oscar winner and his wife found dead alongside one of their dogs at their home last week. >> there was no indication of a struggle. there was no indication of anything that was missing from the home or disturbed. >> both have tested negative for carbon monoxide poisoning, but because their bodies were found at least nine days after their deaths, based on hackman's pacemaker activity, experts say an autopsy will be needed to rule out carbon monoxide. >> the longer that time goes by without carbon monoxide being tested, the less likely it is to show up. it may have diffused out of the body. >> but there are other theories about what could have happened. >> his wife, uh, was found in the bathroom from the scene and from what's been said is that she found her husband in the mudroom, went to the very excited, went to the bat