Wiz Khalifa's 28 Grams mixtape will have to wait, as the rapper was arrested early Sunday morning for marijuana possession.

According to TMZ, Khalifa was stopped at the airport in El Paso on his way to the Neon Desert Music Festival. Of course, the MC wasn't too upset, documenting the events on social media, including taking a selfie (aka "cellfie") in jail (photo seen left).

As we previously reported, Khalifa has been planning to release his 28 Grams mixtape, which he now says he'll release as soon as he's out from behind bars.