legalmania
Verified Paralegal
This would be considered hearsay evidence because your friend is not here to state what he saw. What were the circumstances of death of those people? Was there one person, 2 people?
I worked in the hospital in the Cath lab. We were called to many of the cardiac arrests. The body's sometimes remained in their beds for hours before being removed. I can't think of a single one who had their mouth open. We recently dissected 20 bodies, none had their mouths open, none came to us with bands around their heads.
These bands, if there not put on at the hospital, then they must be put on at the morge, but then they must be taken off again later as none of the cadavers came to us with bands... This does not seem likely as people do not die and go to the morgue on a time schedule. Rigor is a timed event, therefore, if people's mouths were opening from rigor, I would have seen it in the hos, or some of the cadavors would have come to us with open mouths, none did.
I'm not saying it can't happen to someone, somehow, but it is not the norm from my direct experience.
Here are some actual people answering the question themselves not hearsay.
http://www.askmehelpdesk.com/forensic-science/mouth-open-after-death-218273.html