Kyiv Prosecutor's Office spokesperson Nadiia Maksymets wrote on Facebook, Censor.NET reports.
"The court has decided on pre-trial restraints against the members of the crime gang that planned a robbery in Kniazhychi," she wrote.
The detainees are charged with illegal possession of arms and robbery preparation.
"Five of them have been remanded in a 60-day custody. Another one, who agreed to cooperate with the investigation, was put under home arrest with an electronic bracelet," Maksymets said.
Five police officers were shot dead in a fire exchange between members of different police squads in the village of Kniazhychi Dec. 4. Two of them were servicemen of the security police, two were police investigators, and one was a KORD special purpose unit serviceman.
Interior Ministry Adviser Anton Herashchenko wrote it was an accidental skirmish caused by a mistake that led to the deaths of five servicemen.
The tragedy in the village of Kniazhychi occurred during a special operation on apprehension of a dangerous group of criminals who committed robberies in the city of Kyiv and the Kyiv region. The three violators were later apprehended by police.
The prosecutor's office of the Kyiv region is conducting pre-trial investigation into the incident.
Acting National Police Head Vadym Troian claims the criminal gang acted under the cover of law enforcers.
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