mom, Gloria, was arrested in Miami Beach early this morning for allegedly assaulting a parking valet at the famous Fontainebleau Hotel
... this according to law enforcement.
Hotel sources tell us ... Gloria was partying at LIV nightclub with some of her girlfriends earlier in the evening ... but when she tried to leave the hotel, she got into an altercation with one of the valet parking attendants.
We're told Gloria allegedly assaulted the valet. Cops received a call about the incident at 4:47 AM. Gloria was eventually arrested on suspicion of misdemeanor assault. The valet was not arrested.
We're told Gloria has been released from custody.
Gloria has been in trouble with the law before ... having been arrested in 2006 for DUI in Ohio.
LeBron was in Miami last night -- where the Heat played the Bucks ... and lost.
A rep for the hotel confirmed the incident ... but had no further comment.
The Miami Beach PD released a statement ... explaining, "Mr. Sorel Rockfeller, a hotel valet worker, claimed he was assaulted by Ms. James, who was angered because her car was taking too long to be delivered. Several witnesses supported Mr. Rockfeller’s account of what occurred."
The statement continues. "Both Ms. James and the driver of the vehicle were initially uncooperative with the investigating officer. Ms. James was apparently intoxicated as she had bloodshot eyes and a strong odor of alcohol on her breath."
"Ms. James was arrested and taken to the Miami Beach Police Department where she was processed, issued a Promise to Appear and subsequently released."
James was charged with simple battery and disorderly intoxication.
Sources tell us the valet sought medical attention after the incident -- but is expected to return to work.