Michael Phelps, the most decorated American Olympian in history, was arrested for driving under the influence in Maryland on Tuesday morning at 1:40 a.m. Police pulled Phelps over on the Fort McHenry Tunnel on I-95 in Baltimore, where he was driving 84 mph in a 45 mph zone. Police said Phelps was unable to perform standard field-sobriety tests, but was fully cooperative. The swimmer with 18 gold medals earned a DUI in Maryland in March 2004 when he was 19, but struck a plea deal with 18 months of probation. Phelps has not yet commented on the arrest. Phelps was also infamously photographed smoking pot in 2009, which led to USA Swimming suspending him for three months and cost him his Kellogg’s sponsorship. Earlier this year, Phelps announced he would come out of retirement and compete for a spot on the 2016 Olympic team.