Councilmember Marci Overstreet, vice chair of the Council’s Transportation Committee, is demanding a comprehensive investigation into Monday night’s Vine City MARTA Station incident, where an escalator malfunction caused a mass stampede and injured at least nine concertgoers leaving Beyoncé’s Cowboy Carter concert.

ATLANTA — An Atlanta City Council member is calling for a full investigation into a escalator malfunction at a MARTA station after Beyoncé‘s concert Monday night.

Beyoncé concertgoers injured when a MARTA escalator malfunctioned say the transit agency’s report that a “stampede” caused the accident misrepresents the crowd’s behavior and downplays the infrastructure and a lack of staffing to manage the huge crowd.