Officials say a Philadelphia firefighter who died after being found unresponsive in the basement of his firehouse while on duty in July succumbed to heart disease.
The Medical Examiner's Office confirmed 42-year-old Gabriel Lee's cause of death on Thursday.
The 17-year department veteran died July 23. Fire Commissioner Adam Thiel says Lee had been responding to calls earlier in his shift. A spokesman for the firefighters union says firefighters tried to resuscitate him but were unsuccessful.
Rest easy brother. You will be missed by everyone who knew you. Your life lives on through all those you helped. pic.twitter.com/vrpmSkGJZk— IAFF Local 22 (@IAFF22) July 24, 2016