Sean Owen O'Neill Jr., the Chester County man who absconded after violating the terms of his parole on a DUI charge, has fled to Ireland, county authorities said Wednesday.

O'Neill served jail time this year after crashing his vehicle into a house in 2011 while intoxicated. In 2006, he shot and killed his best friend at an underage drinking party, was tried as a juvenile, and was sentenced to a residential treatment program.

After serving a short prison term on the DUI offense, he was required to wear a SCRAM alcohol monitor, but officials lost contact with him this month after he tested positive for alcohol and drugs, a violation of his parole.

Chester County officials said this week that they were following several leads and on Wednesday detectives confirmed that O'Neill is in Ireland.

His father, Sean Owen O'Neill Sr., a wealthy former bar owner, already resides in Ireland - he was deported in 2009 after serving 18 months in jail on a federal firearms offense.

Contact Aubrey Whelan at 610-313-8112, at awhelan@philly.com or on Twitter at @aubreyjwhelan.