March 6 (UPI) -- The Federal Bureau of Investigation is investigating what it calls a "suspicious" breach of networks containing information of ongoing investigations, though details of them have not been revealed.
The cybersecurity incident on a network used for wiretaps and intelligence surveillance warrants was confirmed Thursday by CBS News, CNN and Politico.
Investigators declined to offer more information on who was behind the breach or what may have been accessed during what the FBI called "abnormal log information" in mid-February.
The Bureau alerted Congress about the breach this week.
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