The FBI is dealing with another attack on its digital infrastructure, although the severity isn't yet clear. The law enforcement agency tellsCNN it has "contained" a recent cybersecurity incident on its network. The bureau isn't commenting on the perpetrator, scope or damage, but says it's gathering "additional information."

Sources speaking to CNN claim the intruders targeted a system used to investigate child sexual abuse material (CSAM). The incident involved the high-profile New York Field Office, according to the insiders. Investigators are said to still be investigating the origins of the breach.