Jerod Harris/Getty
July 13, 2012 03:10 PM

It’s back to business for the Cruise family.

After visiting recently divorced dad Tom Cruise at his movie location in the California mountains, teenage son Connor Cruise swung by Comic-Con in San Diego on Thursday night to deejay a party.

A private jet took Connor, 17, to the popular, celebrity-filled convention, where he worked the IGN Entertainment party celebrating the new Resident Evil 6 game at the Hard Rock Hotel, opening for Jermaine Dupri and RZA.

“He seemed very upbeat and he looked great,” says an onlooker. “He seemed to be having a great time performing for the crowd. Everyone totally ate it up! They were really getting into the music he was playing.”

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While the younger Cruise was the center of attention in front of hundreds at the bash while performing on stage – his dad’s split from Katie Holmes has dominated the Hollywood news – he didn’t stick around for the late-night party.

“Everyone was trying to get a minute with him after the set, but he took off soon after,” says the observer.

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