A Kansas sheriff says he doesn’t think four state prison inmates who escaped from his county’s jail had much time together for planning beforehand.

Ottawa County Sheriff Keith Coleman told Associated Press Radio on Thursday the four men spent less than a week together in a section of the jail before Wednesday morning’s escape.

They were in the county jail because the state prison at Ellsworth was overcrowded.

Coleman says they used homemade knives to overpower two guards, get into the jail’s control room and open doors.

Coleman says he and police quickly apprehended one escapee in Minneapolis, the Ottawa County town where the jail is located. Another turned himself in Wednesday at a Walmart in Nebraska.

Two others, including a convicted killer, remain at large.