Donald Trump on Tuesday said that he has raised concerns about a “rigged” election in November due to several recent rulings striking down voter ID laws.

“Well, I’m looking at all of these decisions coming on down from the standpoint of identification, voter ID. And I’m saying, ‘What do you mean, you don’t have to have voter ID to now go in and vote?’ And it’s a little bit scary, and I’ve heard a lot of bad things,” Trump told Fox News’ Bill O’Reilly when asked why he’s concerned the election will be rigged. “I mean, people are going to walk in, they are going to vote 10 times maybe. Who knows?”

“I hope the Republicans are going to be very watchful, and I hope the authorities are going to be very watchful,” he added.

Trump also mentioned concerns about voter ID in a Tuesday interview with Washington, D.C. television station WJLA.

When asked whether he has reason to believe something illegal could take place, Trump said, “I just hear things, and I just feel it, and I felt it having to do with the primaries.”

“I looked at Bernie Sanders I said, ‘He isn’t going to win.’ I thought this whole thing was rigged, and I think the general election is gonna be,” he added.

The Republican nominee raised concerns about a “rigged” election earlier in the week at a campaign rally in Ohio.