Senate Intelligence Chairman Richard Burr on Monday evening said his team has "talked to all the appropriate people" despite the Justice Department asking for additional time to comply with a House request for information about President Trump's wiretapping accusation.

"I would say from our conversations, what we've gotten are sufficient answers," Burr, a Republican from North Carolina, told CNN on Monday.

Burr stopped short of saying whether the intelligence supported Trump's tweet allegations that former President Barack Obama had his Manhattan campaign headquarters spied on last October.

Trump's Justice Department was supposed to share its findings with the House Intelligence committee by Monday, but had asked for "additional time to review the request in compliance with the governing legal authorities and to determine what if any responsive documents may exist."

In response to the department's delay, House Intelligence threatened to subpoena Justice for refusing to answers its questions.

"The Department of Justice has asked for more time to comply with the House Intelligence Committee's request for information related to possible surveillance of Donald Trump or his associates during the election campaign," an intelligence panel spokesman said.

"We have asked the department to provide us this information before the committee's open hearing scheduled for March 20. If the committee does not receive a response by then, the committee will ask for this information during the March 20 hearing and may resort to a compulsory process if our questions continue to go unanswered."

The House Intelligence committee is scheduled to hold a public hearing on their investigation next Monday.