Nick Gordon's New 911 Call for Violating Stay Away Order from Girlfriend

Someone was clearly concerned that Nick Gordon was spending the night with the girlfriend he's accused of beating ... this according to the new 911 call placed into cops.

TMZ has obtained the audio from an anonymous caller who tipped off police that Gordon was with Laura Leal -- from whom he'd been ordered by the court to stay away on the heels of his most recent domestic violence arrest.

You can hear the individual -- who sounds like a woman -- wanted to blow the whistle on Gordon hanging with his GF. She gave the operator his case number, location and other details that she seemed to have on hand.
 

As we reported ... Gordon was arrested again this week for violating the stay away order handed down by the court. Nick told police Leal had snuck into his room while he was asleep and was "just hanging out with him." Leal confirmed his story, saying she felt safe with Nick.

That didn't fly with the law, though. He was booked yet again, and remains in custody.