Alan O’Neill has died at the age of 47. 
 
 A rep for the Sons of Anarchy actor confirms to PEOPLE that O’Neill has passed away. O’Neill’s girlfriend found him unconscious at her apartment on Wednesday, according to his rep. 
 
 “It’s with sadness I confirm the passing of Alan O’Neill, a brilliant funny and kind human being,” said his agent, Annette Walsh. “My thoughts are with his partner, children, family and friends at this time. I’ll personally miss knowing Alan isn’t sharing the planet with us any longer, despite the miles between L.A. and Dublin. Alan was only ever a phone call away. May he rest in peace.” 
 
 The Los Angeles Coroner’s Office confirmed to PEOPLE Friday that he passed away at a residence in Toluca Lake and was pronounced dead at 6 p.m. on June 6; an autopsy is pending. 
 
 The Irish-born actor smoked heavily and had a history of heart problems, according to TMZ, which first reported the news. He also has a history of drug and alcohol abuse, according to the outlet. 
 
 No foul play is suspected, TMZ reported. 
 
 In addition to Sons of Anarchy — he appeared on seven episodes of the FX series as Hugh from 2013-14 — O’Neill starred as Keith McGrath on Fair City from 2006-12. 
 
 His death comes a month after fellow Sons of Anarchy actor David Labrava announced that his 16-year-old son, Tycho Spelis Chiusano, “took his life” after a battle with depression. 
 
 Labrava, who starred as Happy Lowman on the FX drama, encouraged his followers to, “communicate with your loved ones, there might not be any signs. Cherish them🙏.” He concluded, “I am broken 😭.” 

 'Sons of Anarchy' Actor Alan O'Neill Dead at 47 
 
 Alan O'Neill, 'Sons of Anarchy' Actor, Dead at 47 
 
 EXCLUSIVE 
 
 Alan O'Neill -- one of the actors on "Sons of Anarchy" has died ... TMZ has learned. 
 
 Law enforcement sources tell us O'Neill's body was discovered by his girlfriend in the hallway of her Los Angeles apartment Wednesday night. We're told the actor has a history of heart problems and was a heavy smoker. He's also got a history of alcohol and drug abuse. 
 
 We're told no foul play is suspected ... and an autopsy will be completed soon to determine the cause of death. 
 
 O'Neill's acting career dates back to the 1990s. He's perhaps most famous for his role as Hugh on seasons 6 and 7 of 'SoA,' as well as Keith McGrath in "Fair City." His other roles included a popular UK show called "Inspector George Gently" and he was announced as a cast member in an upcoming horror film. 
 
 The Irish-born actor was 47. 
 
 Alan O'Neill Reel from Alan O'Neill on Vimeo. 

 Alan O’Neill, who played Hugh on “Sons of Anarchy,” had died, his manager Greg Meyer confirmed to Variety. He was 47. 
 
 O’Neill’s body was discovered by his girlfriend in the hallway of their Los Angeles apartment on Wednesday night. According to TMZ, the Irish-born actor reportedly had a history of chronic heart problems and was a heavy smoker, in addition to struggling with a drinking problem. 
 
 No foul play is suspected in the actor’s death. 
 
 O’Neill’s agent Annette Walsh described him as brilliant and funny. 
 
 “I’ll personally miss knowing Alan isn’t sharing the planet with us any longer, despite the miles between L.A. and Dublin, Alan was only ever a phone call away,” she said. 
 
 O’Neill is widely known for his role in the sixth and seventh seasons of Kurt Sutter’s hit FX series, but the actor’s career dates back to the 90s. He also played the regular role of Keith McGrath in the drama series “Fair City” — set in the town of Carrigstown — from 2006 to 2012. 
 
 Making his acting debut in the 1997 TV movie “Ballyseedy” as Captain Jim Clarke, O’Neill soon followed up with a run on the 2001 mini-series “Rebel Heart.” He also went on to star in the 2002 short “Strangers in the Night” as Tony, the psychotic ex-boyfriend, 2007’s “32A” as Paddy, 2009’s “Moore Street Masala” as Robert, and in the U.K. crime drama “Inspector George Gently” the same year. 
 
 O’Neill also appeared on “Undercovers” in 2010 as well as “Shadow Dancer” and short “Invisible,” both in 2012. His most recent credits include the Captain in 2016’s “Urge,” in addition to his announced role as Pepper in the upcoming horror film “Charlie Lives: The Family’s Return.”
– Sons of Anarchy stars are mourning fellow cast member Alan O'Neill, who died after being found unconscious by his girlfriend in their Los Angeles apartment Wednesday night, Variety reports. He was 47. The Irish actor starred as former "True IRA" member Hugh in the sixth and seventh seasons of the FX drama. TMZ reports that O'Neill was a heavy smoker with a history of heart problems, as well as drug and alcohol abuse. An autopsy will be carried out, but foul play isn't suspected, according to law enforcement sources. O'Neill was best known in the US for his role in Sons of Anarchy, though he was known in Ireland as a star of the Fair City soap opera from 2006 to 2012, reports the Irish Times. "My good friend Alan O'Neill died today....we worked together on The Sons Of Anarchy...my condolences to his family," tweeted co-star Timothy Murphy. O'Neill's agent, Annette Walsh, offered condolences to his partner, children, family, and friends on the loss of a "brilliant, funny, and kind human being." "I'll personally miss knowing Alan isn't sharing the planet with us any longer, despite the miles between LA and Dublin," she said. "Alan was only ever a phone call away. May he rest in peace." People reports that O'Neill's death comes a month after the suicide of Tycho Spelis Chiusano, the 16-year-old son of Sons of Anarchy star David Labrava.