The shooting took place not long after 11 p.m. as the concert was letting out, CBS Hartford affiliate WFSB reported. Police said gunfire rang out near the theater in a parking lot adjacent to the venue.
The number of shooters remains unclear. Police believe that those involved attended the concert.
Meek Mill was not injured and isn’t believed to be connected to those involved.
Mill, whose real name is Robert Williams, was recently under house arrest after violating probation for the fourth time in eight years.