A floor collapsed under a large crowd of people gathered for a religious event Thursday at a suburban Houston home, sending three dozen people to hospitals, though most suffered minor injuries, authorities said. The collapse occurred while as many as 125 people assembled for the event in a residential neighborhood in Katy, just west of Houston. People were in an apartment above a detached garage when the floor gave way, though it wasn’t immediately clear how many people were inside at the time, West I-10 Fire Department spokesman Tim Thomas said.