TMZ previously reported Bennington was found at his L.A. home hanging from a door separating his bedroom from his closet, which was similar to how his close friend Chris Cornell took his own life in May. Cornell was discovered hanging from a door dividing the bedroom from the bathroom in a hotel room.
Chester committed suicide on Cornell's birthday.
Bennington was scheduled to attend a photo shoot with his Linkin Park bandmates a few hours after he was found by a housekeeper. The band was also planning to go on tour.
Law enforcement sources revealed that there was a partially empty bottle of alcohol found at the site where Bennington died, but there were no drugs discovered.
TMZ was first to report the death certificate story.