RIP: 'Sons Of Anarchy' Actor Alan O'Neill Dies At 47

Sons of Anarchy star Alan O'Neill has died at the age of 47.

The actor was found dead in the hallway of his girlfriends apartment, according to law enforcement sources, who also reveal no foul play was suspected in his death and an autopsy will be completed soon to determine the cause

O'Neill's girlfriend discovered his body Wednesday night.

According to reports, O'Neill has a history with drug and alcohol abuse. He also struggled with heart problems and was a heavy smoker.