This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

OKLAHOMA CITY – Around 2:15 p.m. Tuesday, U.S. Marshals and Oklahoma City police went to a home near N.W. 83rd and MacArthur, which was temporarily blocked, hoping to speak to a robbery suspect.

Officers did not find that person but stumbled upon someone else.

Officials said students from a local middle school were released following an incident with the man.

Some students were not allowed in the neighborhood, according to parents.

Officials said Hefner Middle School is no longer on lockdown, and the bus schedule ran as normal.

Police said the U.S. Marshals were just trying to speak with the man regarding an ongoing sex crimes investigation.

However, that man walked into a house.

“They did find another individual who fit the description of a sex crimes suspect who we had been looking for,” said Capt. Paco Balderrama with OKCPD. “This individual then ran to the back of the house and barricaded himself in.”

They awaited a judge to sign a search warrant, so they could enter the house.

More than 20 tactical members suited up at the scene.

The bomb squad was also activated.

Around 9 p.m. on Tuesday, police said they found a body inside the house with what is believed to have been a self-inflicted gunshot wound.

“This has been a long time working case for, I believe, at least a month that we have been looking into this individual,” Balderrama said.

Police were able to get everyone else inside the house out safely.

Police said, in this case, time was on their side.

“Basically, we call out our tactical unit, which includes the bomb squad, which includes the negotiators, and we can take our time with something like this, especially since there’s no hostages inside the house,” Balderrama said.

Police have not released the suspect’s name yet.