There were no new suspects in the murder, but the investigation is continuing. 该项谋杀尚无新的嫌疑人，但调查还在继续。

+of/into The investigation into the crash of Flight 003 is now in its second month. 针对003次航班坠毁的调查现已进入第二个月。

be under investigation She is still under investigation by the Spanish police. 她仍然在接受西班牙警方调查。