Alan O'Neill, the Irish-born actor who played Hugh in hit AMC show Sons of Anarchy, has been found dead at the age of 47.
They state that O'Neill's body was discovered by his girlfriend in the hallway of her apartment on Wednesday night.
"We're told the actor has a history of heart problems and was a heavy smoker".
Foul play is not said to be suspected. He also had a recurring role on Irish television drama series Fair City.
Added Kristen Renton, who portrayed Ima Tite on the series, "RIP sir..."
Sons of Anarchy debuted in 2008, before eventually concluding in 2014 after 92 episodes. Alan O'Neill battled many demons in his life. Thank you for your kindness.
Pictured: Alan O'Neill, who passed away earlier this week, attending the premiere of Columbia Pictures' "Robocop" at TCL Chinese Theatre in Hollywood, California on February 10, 2014. "My thoughts are with his partner, children, family and friends at this time".
"My good friend Alan O'Neill died today.we worked together on The Sons Of Anarchy.my condolences to his family", actor Timothy V. Murphy wrote in his own message.
"Always enjoyed working with him". Seamus Power, one of the co-stars of Fair City, posted a short tribute message on Twitter on Wednesday.