Story highlights US investigators believe Russian hackers breached Qatar's state news agency

A handful of countries, including Saudi Arabia, have severed ties with Qatar over allegations that it funds terrorism

Washington (CNN) Qatar's ambassador to the United States on Monday shut down reports that his nation supports Islamist extremist groups.

"All these stories about Qatar financing terrorism are fabricated," Ambassador Sheikh Meshal Bin Hamad Al-Thani told CNN on "Erin Burnett OutFront" on Tuesday. "They are not true."

The United Arab Emirates accused Qatar of "funding and hosting" the Muslim Brotherhood, a nearly 100-year-old Islamist group, considered a terrorist organization by Saudi Arabia and the UAE. As a result, a number of Middle Eastern countries -- including the UAE, Saudi Arabia, Egypt, Bahrain, Yemen and the Maldives -- have said they are indefinitely severing ties with Qatar.

But the Qatari ambassador said there is no proof in the allegations.

.@ErinBurnett asks Sheikh Meshal Bin Hamad Al-Thani about allegations Qatar financed terror https://t.co/IBDxCupGly https://t.co/SF2LIc9hBd — OutFrontCNN (@OutFrontCNN) June 7, 2017

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