Texas health regulators have told Camp Mystic’s owners they are investigating hundreds of complaints following last year’s deadly floods that killed 27 girls. The investigation disclosed Tuesday comes as the state considers whether to allow the all-girls camp to reopen this summer. State police said the Texas Rangers are also helping look into allegations of neglect, but the scope of the state’s elite investigations unit was not immediately clear. The investigations underscore the hurdles facing Camp Mystic as it pushes ahead with reopening plans. The plans have sparked a backlash from the families of the 25 girls and two teenage counselors who died in the July 4 floods.