CHESTERFIELD COUNTY, S.C. – Authorities in Chesterfield County are investigating after a school bus driver was pulled over for suspicion of DUI Monday morning.

According to a spokesperson for the Chesterfield County School District, the driver was pulled over while driving a bus with five Central High School students on board Monday. State Transport Police stopped the bus on Airport Road in Pageland after a person flagged down an officer, saying the driver was driving erratically.

The driver of the bus, identified as Angela Caldwell, was arrested and charged with DUI. State Transport Police said her blood alcohol level was .31.

South Carolina State Transport Police initiated the traffic stop. School officials are scheduled to have a press conference at 2 p.m. to provide further information.