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GOLDEN, Colo. — Two sex offenders with gang affiliations escaped from the Lookout Mountain Youth Services Center, which was the site of a riot last week, on Monday morning, the Golden Police Department said.

Javier Madera, 19, is described as Hispanic, 5-foot-10 and 147 pounds. He has brown hair and brown eyes, and a skull tattoo on his right forearm.

He is a sex offender and has gang affiliations, police said. His last known address was in Commerce City.

Emilio Dominguez, 17, is described as Hispanic, 5-foot-9 and 182 pounds. He has black hair and brown eyes.

He has the word “King” tattooed on his right hand, and he has a tattoo of roses and “Dominguez” on his right arm.

He is described by police as a violent sex offender with gang affiliations and he also has been charged with witness victim intimidation. His parents live in Denver.

The Cedar Unit where the escape occurred had three staff members on duty, meeting staffing rations.

Police said a guard last saw the two, who are roommates at the facility, between midnight and 1 a.m. The guard let one of them use a restroom.

A Golden police officer did a routine perimeter check about 2:20 a.m. and did not report seeing anything unusual.

During another routine check three hours later, the officer saw a dumpster turned on its side and a sheet hanging out of a window on the second floor. A window was also broken out.

Police confirmed that while the facility has video monitoring, the area from which the teens escaped did not have coverage.

Police said they believe someone drove the teens away from the area after their escape.

In March 2018, Madera was charged with attempting to escape from the Mount View Youth Services Center, also in Jefferson County, with another inmate.

In November, he was convicted, but a judge ruled his 90-day sentence could be served concurrently with his existing sentence.

During the March 2018 attempted escape, bed sheets were also used, according to an arrest affidavit. The other inmate successfully escaped but was later caught.

Anyone who sees Madera or Dominguez or has information is asked not to approach them and instead call 911.

On Wednesday night, a riot broke out at the facility. Police said eight juveniles were involved in the riot, four of whom suffered minor injuries. Police believe two juveniles instigated the riot.

Officials said 19 staff members were involved with 10 of them being injured. Six suffered minor injuries and four were taken to a hospital, but the injuries were not serious.

On Thursday, an official said three staff members were placed on paid administrative leave after being accused of bringing illicit drugs into the facility.

According to the Colorado Department of Human Services, there are two categories of escapes.

There are escapes from the secure perimeter of the Lookout Mountain Youth Services Center, and what is categorized as an escape from a community level pass or transition activity.

The latter occurs when a youth is outside the perimeter of the fence participating in activities such as a transitional home pass, a temporary release because of starting a job or classes in higher education, or participating with staff supervision in community service projects such as volunteering with a nonprofit.