And officials at the Minnehaha County Jail have searched the building and tightened security to prevent future escapes, said Sheriff Mike Milstead. Every door, window and lock in the jail was checked, and additional layers of Lexan, a brand of thick Plexiglas, were added to windows in the maximum security cells.
Flowers remains on the run, the subject of a multi-state manhunt centered in Sioux City.
We've received a lot of bits of information, and none of it has indicated he's left town. But if he has left, he'll be back. Milstead sent several corrections officers to Sioux City to work with investigators there. They know him and can spot him from blocks away. Special Agent Pete Sakaris of the FBI's Omaha Field Office said federal agents are also involved.