Alan O'Neill, the actor best known for playing Hugh on season 6 and 7 of Sons Of Anarchy, has passed away suddenly at the age of 47.
The heartbreaking news was reported by TMZ, who revealed the actor's girlfriend found his body in his apartment building.
While the cause of death hasn't been determined, law enforcement are not treating the death as suspicious.
Alan reportedly had a history of heart issues, and was a long-time smoker. He also reportedly battled alcohol and drug addictions in the past, which may also have contributed to his sudden death.
Our thoughts go out to the star's family and friends.