Michael Phelps was arrested on DUI charges in Baltimore, Maryland. Police stopped the legendary Olympic swimmer for speeding and subsequently he failed a field sobriety test. Hours later, he issued an apology for his actions, via Twitter.

Michael Phelps

Photo: Michael Phelps

The 29-year-old swimmer, with 22 medals, including 18 gold medals, is the most decorated Olympic athlete in history. Not surprisingly his arrest drew immediate international attention.

The mug shot has not yet been released but details of the incident which took place at approximately 1:40 a.m. have been reported. According to Baltimore Sun, quoting the Maryland Transportation Authority police, radar detected that Phelps was driving a Land Rover 84 miles an hour in a 45 mile per hour zone of Interstate-395.

When stopped by police, according to the statement, Phelps “was unable to perform satisfactorily a series of standard field sobriety tests.” Reportedly he also failed a Breathalyzer test. TMZ reports that his blood alcohol was “almost twice the legal limit.”

The Baltimore Sun goes on to note that Phelps was arrested and charged with DUI, excessive speed, and crossing double lane lines. After being processed he was “released to a ‘responsible adult.'”

Michael Phelps took to Twitter to made a public statement of apology. He said in part, “”I understand the severity of my actions and take full responsibility.” He went on to add, “I know these words may not mean much right now but I am deeply sorry to everyone I have let down.”

It marks his second DUI arrest, as CNN notes. He was previously arrested in 2004, in Salisbury, Maryland. He entered a guilty plea and was given an 18-month probation sentence.

As noted, Michael Phelps’ booking photo has not yet been released. Check back for the picture as well as for additional updates in this developing story. A video report is below.