Jermaine Dupri – who happens to be a music industry pro as well as Janet Jackson’s main squeeze – had a little party in Atlanta over the weekend. And it was a bang!

More pictures after the skip…

Dupri’s party guests included P Diddy, Usher, Gabrielle Union and Larenz Tate.  And they all ran for cover and left the party when shots rang out in the night.  None of the stars were injured.