Charges against one officer illustrate how confidential records can hide when officers accused of wrongdoing move between departments.

Federal rules do not require Oklahoma’s U.S. Senator Markwayne Mullin to shut down his leadership PAC if he is confirmed to lead the Department of Homeland Security. The committee has spent money on ...

Oklahoma took on an ambitious project to catalog all of the state’s injection wells, which shoot toxic waste generated by oil drilling back into the ground. Despite records showing risk of drinking ...

Tulsa Mayor Monroe Nichols has ordered a review of jail operations after we uncovered a series of deaths at the facility.

The Frontier wants to talk to service members and their families about access to mental health care at Tinker.

After a man died from a treatable illness in Tulsa’s city jail, records reveal a pattern of preventable deaths and ignored warnings.

After clearing homeless encampments in Oklahoma City, the state has agreed to help pay to house about 40 people — a move local providers say they’ve never seen before.

After Kristi Noem’s firing, President Donald Trump tapped Oklahoma Sen. Markwayne Mullin for one of the most powerful jobs in ...

From Pryor to Stillwater and Muskogee, local officials say supplies are sufficient, even as Google alone used more than 1.1 billion gallons in a single year. Cooling towers at Google’s data center in ...