(UPDATE: Maxey has surrendered peacefully according to The Sun-Times.)
Authorities say Jeffrey Todd Maxey, former Cleburne County deputy, caused the lockdown and that the courthouse was evacuated.
Maxey was released from jail on Wednesday on domestic battery charges.
An officer tells KATV that the detention center and sheriff's office, which are in the same area as the courthouse on West Martin Street, is not affected by the lockdown.
Police are not releasing any other details at this time, but multiple agencies have responded, including State Police.