Junior Seau died of a self-inflicted gunshot wound, the San Diego County Medical Examiner confirmed on Thursday.
The medical examiner's office said in a news release it is awaiting a decision by Seau's family to release the deceased linebacker's brain for study. Boston University researchers reportedly have requested an opportunity to examine Seau's brain to further its study of the brain ailment chronic traumatic encephalopathy (CTE).
Deputy medical examiner Craig Nelson conducted the autopsy, which included a full examination of Seau's body and organs, county spokesman Sarah Gordon said in a news release.
Seau was found Wednesday morning at his home in Oceanside, Calif. Medical workers called to the scene by Seau's girlfriend failed to resuscitate him.
A final report from the medical examiner -- which includes lab test on tissues -- could take up to 90 days to complete.