Israeli police pulled the national computer network from the civilian Internet on Thursday following an intelligence tip that a virus may have infected the central police system through a CD or USB stick.
Police ordered every district and officer under its jurisdiction to disconnect their computers from the civilian Internet, and advised officers to be careful when using police computers or software.
All offices for police district spokespersons have also gone offline and are currently not sending or responding to emails.
National Police spokesperson Micky Rosenfeld said investigators are looking at the possibility that hackers broke into the national computer system, and are trying to determine the extent of the break-in, the Jerusalem Post reported.
Rosenfeld also said they were checking to see whether the breach involved a wide-scale cyber-attack, or a virus infecting only a few computers. The intelligence tip did not indicate the culprit behind the attack, but it appeared to be an external organization. The police are still trying to identify the source of the information.