Forces

The gang's actions were uncovered following an investigation involving multiple police forces together with Romanian authorities.

On the day of the funeral, they will be joined by thousands of security personnel from various branches of the police and armed forces, as well as river patrol units, bomb-sniffing dogs and rooftop snipers.

Moskalik represented Russia's General Staff in talks with Ukraine in Paris in 2015, which resulted in the Minsk agreements set up to end the war between Ukraine and Russian-backed separatist forces that started in 2014.

Last year, a high-ranking general in the Russian armed forces, Lt Gen Igor Kirillov, and his assistant were killed in Moscow by Ukraine's SBU security service.

Kirillov, head of the Radiation, Biological and Chemical Defence Forces, was outside a residential block when a device hidden in a scooter was detonated remotely, SK said.