Three drivers are arrested for DUI during a joint law-enforcement operation in Cherokee County.

A sobriety checkpoint was conducted Friday night at the intersection of U.S. 400 and Kansas Highway 7. Authorities say 400 vehicles passed through the checkpoint and four drivers were tested for impairment. One driver was arrested on suspicion of driving under the influence of drugs, aggravated child endangerment, possession of marijuana and drug paraphernalia, transporting an open container and an outstanding warrant.

Two additional drivers were arrested on suspicion of DUI during a roving patrol conducted after the checkpoint. Authorities say both had open containers of alcohol. The Kansas Highway Patrol and law-enforcement agencies from Cherokee and Crawford counties participated in the operation.