OKMULGEE, Oklahoma - A 14-year-old boy is in custody after police said he threatened to shoot up Okmulgee High School.

Police said the boy had already been detained by the time they got to the school.

The student, and all areas the student was known to have been in, were searched and no weapons were discovered. Investigators also searched the boy’s home and didn't find anything.

“We do not believe that he had the means to immediately carry out the threat, but we do think that he was serious, based on statements he made during the interview,” Chief Joe Prentice said.

They interviewed more than 20 students who were identified as potential witnesses and the school was put on lock down with parents being notified immediately via text around 9:30 a.m.

"She said it's not a drill cause it wasn't planned, and I was like, ‘They're probably not telling anyone cause they don't want them to freak out or anything," student Jaden Skinner said.

Prentice said, "I think there was a general threat to shoot up the school and a few students that were singled out.”

Based on statements made by the student in an interview, investigators believe that, although the student did not have the means to carry out the threat immediately, the threat was credible.

The district also released a statement saying, "Police and school officials interviewed the young man, conducted a thorough search, and determined the treat to be nonviable. At no time were students in any actual danger. The lock down was lifted and school returned to normal operations."