Testifying in Ottawa before the inquiry into foreign interference, O'Toole said one of his MPs was told by a local mayor that a Conservative senator was actively working on behalf of a Chinese government-owned company.
"There was a member of our upper chamber caucus that an MP brought to me that he had been directly or indirectly promoting or lobbying an interest of a Chinese state-owned enterprise in a riding in Ontario," O'Toole told the inquiry.
"There had been previous stories about sponsored travel and other things that led me to have some serious concerns considering some of the subjects that we were discussing within caucus. But it was that issue in a town in Ontario, potentially advocating for an economic interest, that really forced me to make a decision about some concerns about that member."