Romanian authorities collaborated with US services to catch him and the officers of the Directorate for Investigating Organized Crime and Terrorism (DIOCT) raided His House last Wednesday. Guccifer is a 40-year-old Marcel Lazar Lehel, a resident of Arad, who was convicted of several other computer crimes in 2012, according to Romanian media report. His well known leaks included the emails of former secretary of state ‘Colin Powell’, suggested that he was having an affair, which was later denied by Colin.
Source: https://thehackernews.com/2014/01/infamous-hacker-guccifer-arrested-in.html