Michael Phelps was arrested for driving under the influence in Baltimore, Maryland early yesterday morning TMZ Sports has learned.

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Our sources tell us the USA Olympic legend was pulled over around 1:40 AM in his white Land Rover. We’re told he bombed his field sobriety test and his B.A.C. was almost twice the legal limit. Officials just issued a statement saying Phelps was initially pulled over for going 84 in a 45 and during the stop, the officer noticed he was hammered. Our sources say Phelps was hauled to a nearby station where he was booked for DUI and was eventually released.

Phelps, who returned to competitive swimming in April, said on his official Twitter account that he understands the severity of his actions.

“I know these words may not mean much right now but I am deeply sorry to everyone I have let down,” Phelps, 29, said in a series of three tweets.

USA Swimming issued a written statement Tuesday afternoon.

“The news regarding Michael Phelps and his actions are disappointing and unquestionably serious. We expect our athletes to conduct themselves responsibly in and out of the pool,” the statement said.