Authorities have responded with a few more details regarding the bomb threat in Elkhart Wednesday that also affected several other districts, including Satanta, Rolla, Hugoton and Keyes, Oklahoma.

Kansas Highway Patrol troopers were in the area Thursday as a precautionary measure. Several explosion detective units were brought in. School in Elkhart was delayed until 12:30.

The Haskell County Sheriff’s Department said Thursday that investigators found no credible threat to schools in their area. They say the students that were evacuated were done so for precautionary reasons.

Most of the affected schools were back to regular schedules Thursday.