The Mississippi Emergency Management Agency and the Mississippi Office of Homeland Security are monitoring 29 bomb threats to county courthouses across the state.
The bomb threats began around 1 p.m. Wednesday and continued through the afternoon.
Local officials notified the MSOHS, MEMA and the FBI. Those counties then began the process of investigating the threats. Several courthouses were cleared and then returned to normal operations.
MSOHS director, Jay Ledbetter, said the messages to courthouses sounded recorded or scripted.
The bomb threats were similar to those received last month in four other states, Nebraska, Oregon, Tennessee and Washington. None of the threats were found to be credible.
Anyone who has information about who may be responsible for the threats should contact the Mississippi Fusion Center at 601-933-7200 or the Jackson FBI office at 601-948-5000.