Four People Shot At T.I. Concert?

Last night, rapper T.I. was suppose to perform at Irving Plaza. The show was quickly canceled when shots rang out, backstage around 10:15pm. Four people were shot, leaving one dead and three in critical condition. Unfortunately, no arrests have been made and people are still puzzled to how a gun entered the venue when metal detectors were present at the entrance. Uncle Murda and Maino were also on the bill for the night.