Security has been increased at Independence High School after two students were arrested and accused of making threats against the school, Tangipahoa Parish school Superintendent Mark Kolwe said Thursday.

Principal Hugh Wallace said the students’ grandmother called the Tangipahoa Parish Sheriff’s Office on Tuesday after finding written threats in the boys’ room at home, Kolwe said in a written statement.

Kolwe did not disclose the nature of the threats or the students’ names.

Due to the grandmother’s concerns, she kept the boys at home, Kolwe said.

Authorities searched the house, found the written threats and booked the two students into the Florida Parishes Juvenile Detention Center, the superintendent said.

“At no time were these two students on the campus of Independence High School,” Kolwe said. “There was never a security breach on campus, and classes continued without interruption. The school was never in lockdown.”

Additional security was provided on campus as a precautionary measure and the school continues to operate as usual, he said.