The rapper was driving in California around 1AM on Thursday morning when his auto hit into and knocked down a power pole.
Miller's arrest came a week after TMZ reported he and the four-time Grammy nominee - turning 25 next month - blamed "busy schedules" for their break-up after a 20-month-long romance.
Pittsburgh rapper Mac Miller has reportedly been arrested following a drunk driving incident this morning.
The rapper, who only recently split from Ariana Grande, was locked up according to TMZ for fleeing the scene with his two passengers after the G-Wagon he was driving knocked over a power pole.
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When police arrived at the crash scene, they ran the plates and got Mac's address and took a visit his home. He confessed to drunk driving and fleeing the scene.
Mac Miller is now in jail on a $15,000 bond after allegedly crashing his vehicle while while under the influence.
'He was the most polite and nice intoxicated person we've ever seen, ' a policeman told the site.
This's story is still developing.