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Wiz Khalifa is mourning the loss of his uncle. 

According to the "Pittsburgh Post-Gazette," Imani Porter was shot in the head Wednesday night while sitting in a parked car outside of a Steak 'n Shake restaurant near Pittsburgh.  He was only 20-years-old. 

On Twitter, Wiz Khalifa pointed out that while his uncle was younger than himself, he was "more level headed than all of us."  He added that he never imagined this would happen "in a million years." 

A 17-year-old suspect turned himself in early Thursday morning.  Police say the teen and another man had arranged to buy heroin from Porter.  As the meeting took place, the suspects allegedly drew guns and fired a single shot.  Police say drugs were found in and around the car.    

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