9:11 AM PT -- According to Nate Diaz's rep, Zach Rosenfield, the ex-UFC star has already been released from custody ... less than four hours after he was booked into jail.
Rosenfield tells TMZ Sports, Diaz posted bond ... and a judge has since allowed him to resume travel.
"We appreciate how we were treated by the New Orleans Police Department, the court and their staff," Rosenfield said.
6:35 AM PT -- Nate Diaz's rep, Zach Rosenfield, tells TMZ Sports ... "Nate voluntarily turned himself into the New Orleans Police Department this morning approximately at 7:10 AM CT. We continue to look forward to presenting all the evidence and videos that show Nate was acting in self-defense."
Nate Diaz is now in custody in New Orleans ... jail records, obtained by TMZ Sports, show the ex-UFC star turned himself in early Thursday morning after an arrest warrant was issued for him earlier this week.
According to the records, Diaz was booked at 7:40 AM on a charge of second-degree battery.
No further details surrounding the turn-in were made immediately available.
As we reported, the New Orleans Police Dept. initially issued the arrest warrant for the 38-year-old fighter on Monday ... two days after he was seen on video choking out a man during a large altercation on Bourbon Street.
In the footage, you can see Diaz -- who was in Louisiana to watch the Misfits Boxing 6 event -- got a guy in a headlock ... and choked him unconscious before he laid the dude down in the street. Cops said the man suffered a head wound in the altercation.
After the arrest warrant was issued, Diaz's rep, Zach Rosenfield, said Diaz was innocent ... and "acted entirely in self-defense."
Diaz is slated to fight Jake Paul in a boxing match later this summer. It's unclear if Wednesday's arrest will alter any plans for the much-anticipated fight.
Originally Published -- 6:19 AM PT