LUGOFF, S.C. (AP) - A South Carolina county placed all 20 of its schools on lockdown after deputies say a teenage boy threatened in an Internet message to harm students.
Kershaw County Sheriff's Capt. David Thomley says the boy was arrested Wednesday, but heightened security will remain at the schools until investigators determine if the teen acted alone.
Thomley says the boy's threats were reported to deputies Tuesday night, and he was arrested at his home Wednesday morning after investigators tracked the messages to his computer.
The sheriff's office sent officers to several schools, and the State Law Enforcement Division is helping the investigation.