DENVER (CBS4) – Denver police are continuing to investigate a possible bomb threat in downtown Denver.

The threat resulted in the Hyatt Regency hotel to be evacuated early Saturday morning. Police say hotel valet discovered a suspicious white pickup truck parked near the hotel on Welton Street and alerted police.

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Guests of the Hyatt Regency spill into the street early Saturday (credit: CBS)

Guests of the Hyatt Regency spill into the street early Saturday (credit: CBS)

Police spokesperson Raquel Lopez said officers discovered some sort of device inside the truck.

“At that time they felt a credible threat,” Lopez said.

Several city blocks were subsequently shut down. The hotel was fully evacuated around 2:30 a.m. Saturday. Guests were taken to the Denver Center for the Performing Arts complex.

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The Hyatt at the Colorado Convention Center was evacuated early Saturday (credit: CBS)

The Hyatt at the Colorado Convention Center was evacuated early Saturday (credit: CBS)

Denver police would not confirm what kind of device was found in the truck but say the bomb squad used a “Disrupter” on the vehicle, which may have resulted in a loud boom.

The area was cleared around 5 a.m. with guests being allowed back inside their rooms.

Denver police spoke to a person of interest but as of Monday have no suspects.

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Mark Taylor is a weekend morning anchor and reporter with CBS4 news covering a wide variety of stories. Follow him on Twitter @MarkTaylor_TV.