From left, Phelps, Lochte and Hungary’s Laszlo Cheh after the 200-meter individual medley. (AP Photo/Daniel Ochoa De Olza)

Olympic swimmer Michael Phelps says he is “deeply sorry to everyone I have let down” after being arrested and charged with driving under the influence.

Phelps was “speeding excessively and crossing double lane lines within the Fort McHenry Tunnel on Interstate 95 in Baltimore around 1:40 a.m. Tuesday,” Maryland police said in a statement. The 29-year-old Towson, Md. native was pulled over after an officer operating a radar clocked Phelps’ Land Rover going 84 mph in a 45-mph zone. According to TMZ Sports, which first reported the arrest, Phelps’ blood alcohol content was nearly double the legal limit.

“Mr. Phelps was identified as the driver by his driver’s license and appeared to be under the influence,” Maryland Transportation Authority police said in a statement. “He was unable to perform satisfactorily a series of standard field sobriety tests. Mr. Phelps was cooperative throughout the process.”

Phelps, who pleaded guilty to DUI after a 2004 incident, acknowledged the arrest and apologized in a series of tweets. He is the winner of 22 Olympic medals, 18 of which are gold.