FBI agents are “wasting their time” investigating the late Sen. Lindsey Graham’s Capitol Hill residence after the 71-year-old lawmaker’s sudden death Saturday night, President Trump told reporters Tuesday.

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“I don’t see a lot of evil there,” he said after agents were seen at the South Carolina Republican’s townhouse Monday. “There’s all sorts of conspiracy theories going along. … I think the FBI is wasting their time if they’re doing it.”

Trump said that Graham, who died of an apparent aortic dissection, had complained recently of a “bad back,” which the president said was “one of the primary signs” that he could suffer the life-ending heart attack.

Latest on the death of Sen. Lindsey Graham:

“What happened is actually something that’s very hard to detect. It was not related to the any blockage,” Trump added. “Sounds unfortunate, but there’s not much you can do about it … his father died of the same thing at about the same age.”