Olympic swimmer Michael Phelps was arrested early Tuesday morning on a DUI charge in Maryland.

According to the Maryland Transportation Authority, Phelps, who is known as the ‘Baltimore Bullet’ and is the most decorated Olympian of all time, was arrested at approximately 1:40 a.m. and was charged with driving under the influence, excessive speed, and crossing double lane lines after failing a field sobriety test.

“He was unable to perform satisfactorily a series of standard field sobriety tests,” a statement issued on Tuesday afternoon from USA Swimming read. “Mr. Phelps was cooperative throughout the process.”

This is not the first time that the legendary swimmer has been arrested for drinking and driving. The first altercation occurred in 2004 after he competed in the Athens Olympics. He was also suspended for three months in 2009 after he was photographed with a marijuana pipe after the Beijing Games.

“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 read.

Phelps took to Twitter to publically apologize to his friends for his actions. “Earlier this morning, I was arrested and charged with DUI, excessive speeding and crossing double lane lines,” he tweeted. “I understand the severity of my actions and take full responsibility. I know these words may not mean much right now but I am deeply sorry to everyone I have let down.”

(1/3) Earlier this morning, I was arrested and charged with DUI, excessive speeding and crossing double lane lines.

— Michael Phelps (@MichaelPhelps) September 30, 2014

(2/3) I understand the severity of my actions and take full responsibility.

— Michael Phelps (@MichaelPhelps) September 30, 2014

(3/3) I know these words may not mean much right now but I am deeply sorry to everyone I have let down.

— Michael Phelps (@MichaelPhelps) September 30, 2014