Andy Reid's son died of heroin overdose

Garrett Reid, the son of Philadelphia Eagles head coach Andy Reid, died in August of an accidental heroin overdose.

Northampton County District Attorney John Morganelli held a news conference Thursday to release details of the investigation and coroner Zachary Lysek confirmed the cause of death was "acute opiate 'heroin' toxicity."

Garrett Reid died Aug. 5 at the age of 29. He was found dead in a dorm room at Lehigh University, site of the Eagles' training camp.

The younger Reid had battled substance abuse for a few years, spending time in jail as a result, and Andy Reid had mentioned the drug problems in the immediate aftermath of Garrett's death, saying in a statement his son had "lost the battle that has been ongoing for the last eight years."