Rapper Wiz Khalifa arrested for marijuana possession during "28 Grams" release; Tweets jail selfie

Rapper Wiz Khalifa was arrested at a Texas airport early Sunday morning after a "leafy green substance" was found during a TSA check. 

The "Black and Yellow" artist was supposed to be releasing his new album, "28 Grams." Instead. he live-Tweeted his arrest and incarceration - including a "jail selfie." "They're tryna figure out how many grams I had," he tweeted. "How ironic."  Police later confirmed that Khalifa was in possession of .5 grams of marijuana.