Watch: Kellyanne Conway backtracks on explosive weekend claims; admits 'I have no evidence

White House senior counselor Kellyanne Conway told George Stephanopoulos Monday morning that she has no evidence of President Donald Trump's phones being wiretapped before he became president.

When asked about Trump's claims that former President Barack Obama tapped the phones in Trump Tower during an interview published Sunday on USA Today, Conway suggested that there were many other ways Trump could have been monitored other than phone tapping.

“What I can say is there are many ways to surveil each other,” Conway told reporter Mike Kelly. “You can surveil someone through their phones, certainly through their television sets — any number of ways.”

She continued to bolster her claim that Trump could have been monitored by other means, saying that technology could have been used by "microwaves that turn into cameras."

"We know this is a fact of modern life," she said.

But on Monday, Conway backtracked, telling Stephanopoulos that she was merely speaking in general terms about existing surveillance technology.

"I wasn't making a suggestion about Trump Tower," Conway said. "Those are two separate things."

"But that's what you were asked about," Stephanopoulos reminded her.

Conway repeated that she wasn't making a specific claim, shooting back that the lack of evidence is the reason why an investigation is necessary.

"And I answered him about surveilling generally," she said.

"I have no evidence, but that’s why there’s an investigation in Congress. That’s particularly what investigations are for," Conway rebuked, adding later in the interview, "No, of course I don’t have any evidence of those allegations and that answer has nothing to do with what the president said last week."

WATCH: "I have no evidence but that's why there's an investigation in Congress..." @KellyannePolls on Trump's wiretap claims. pic.twitter.com/W4kGlrK0Um

— Good Morning America (@GMA) March 13, 2017

Earlier this month, Trump suggested on Twitter that Obama had been monitoring his phones at Trump Tower during the 2016 presidential campaign. "Terrible! Just found out that Obama had my "wires tapped" in Trump Tower just before the victory. Nothing found. This is McCarthyism," he wrote.

Terrible! Just found out that Obama had my "wires tapped" in Trump Tower just before the victory. Nothing found. This is McCarthyism!

— Donald J. Trump (@realDonaldTrump) March 4, 2017

Trump offered no evidence to back up his claim, but his administration has since been calling for an investigation into the matter. Former National Intelligence Director James Clapper, who served under Obama, has denied the claims. The House Intelligence Committee has requested that the White House administration provide them with evidence of the wiretapping by Monday.