The father of 6-year-old Veronica Moser-Sullivan, who was the youngest of the 12 people killed in the July 20 Aurora theater shootings, filed the most recent lawsuit against Cinemark on Friday.

The lawsuit, filed by Ian Sullivan in federal court in Denver, alleges, like previous suits filed against the theater, that inadequate security at the Century Aurora 16 allowed the attack to happen.

The suit details some of the known security procedures the theater had taken after previous altercations both in the theater and at the Aurora mall by hiring off-duty law enforcement for security on Friday and Saturday nights.

The suit alleges that knowing that large crowds were expected for the midnight showing Thursday night into Friday morning, the theater should have hired added security that day, too.

Other allegations also blast the theater for safety precautions related to the lack of alarms on the emergency doors, and the lack of training for the employees — both for preventing crime, and for reacting to such an incident.

“There was no action taken by theater employees to safely evacuate the many people left in Auditorium 9,” the suit states.

Texas-based Cinemark, which operates the Aurora theater, has filed motions to dismiss on two of the other lawsuits other victims in the shooting have filed.

Cinemark requested the dismissal on grounds that the lawsuits fail to state a claim on which relief can be granted and that the company could not have foreseen such an attack.

Friday’s suit does not indicate a dollar amount Sullivan is seeking.