throw suspicion on somebody
From Longman Dictionary of Contemporary Englishthrow suspicion on somebodythrow suspicion on somebodySUSPECTto make people think that someone is probably guilty This latest document throws suspicion on the company chairman. → throwExamples from the Corpusthrow suspicion on somebody• Philby remained bitter towards Burgess, whose defection had thrown suspicion on him and ultimately led to his unmasking.