Europol, FBI and law enforcement agencies raided six houses in East Romania and made five arrests. Authorities seized a significant amount of hard drives, external storage, laptops, cryptocurrency mining devices, documents and hundreds of SIM cards during the raid. All of the five suspects were not arrested for developing or maintaining the infamous ransomware strains, but for allegedly spreading CTB Locker and Cerber. The authorities did not release the actual identities of the arrested individuals yet, but Europol released a dramatic video of the arrests.
Source: https://thehackernews.com/2017/12/ctb-locker-cerber-ransomware.html