FEDERAL HEIGHTS, Colo. Water World will reopen Sunday after an "unverified threat received via phone call" forced the park's evacuation on Saturday morning.By 3 p.m. Saturday, a park official wrote in a release: "We are gratefu l to share that law enforcement has determined that there is no credible threat and Water World is able to re-open tomorrow, Sunday July 12."Kellie Flowers Rowan / Community Relations Manager Hyland Hills Park and Recreation District added "We want to say a tremendous thank you to our guests for supporting a safe and effective evacuation, and to our Team Members and local law enforcement for a swift response." In the video player below, Denver7's Maggie Bryan listens to guests as they share how the evacuation unfolded. 'No credible threat': Water World to reopen Sunday after evacuationWater World was evacuated Saturday morning out of abundance of caution following what a park official later described as the unverified threat received via phone call."During an afternoon press briefing, Federal Heights PD Commander Jason Schlenker said the evacuation was triggered after an employee received a call. "The employee immediately contacted the supervisor and the park was evacuated. No device was located nothing of concern was found," added Schlenker.Staff and law enforcement were able to evacuate guests within 30 to 45 minutes. Rowan, during the press briefing, said there were around 4,000 guests inside Water World at the time of the evacuation. Federal Heights police were also on the scene as social media posts showed a crowd gathered outside of the park. Video from AirTracker 7 showed law enforcement scouring the area with dogs.Federal Heights PD on social media told the public to avoid the area of Pecos and 90th. The department later said a reunification area is set up at Carstens/Camenisch Park.Water World on social media added park employees could be picked up at the sports complex at 8650 Zuni St. As for Saturday's guests who were forced to evacuate they can return to Water World to claim property left behind between 4:15 p.m. and 7:00 p.m. Saturday. The park advises visitors to arrive at the main entrance via 90th Avenue."Upon arrival, guests will be grouped based on the location of their left-behind property and escorted by staff to retrieve their property. If available, please be ready to present your ticket from today's visit. We appreciate your patience and cooperation through this process," added Rowan. "If you are unable to come today, property may be picked up tomorrow, Sunday July 12, starting at 8:00am. For Sunday pick-up, please arrive at the Learn-to-Swim Pool entrance near the red brick administration building and red banner flags. Additional information regarding reticketing from today's visit will be shared later." There was no other information available as to the investigation, but the Federal Heights Police Department has scheduled a press briefing at 4 p.m.Denver7 will update this story as we learn more. Refresh this page for the latest. ...read more read less