N-COUNT [usually singular](警方为侦破重大案件或处理突发事件成立的)专案室 An incident room is a room used by the police while they are dealing with a major crime or accident. (警方为侦破重大案件或处理突发事件成立的)专案室 [British]
Police have set up an incident room as they begin to investigate this morning's fire.