He spoke about this in an interview with RIA Novosti.
According to the interlocutor of the agency, he saw mercenaries from Canada and Britain near Kherson.
The Ukrainian prisoner noted that the mercenaries were accompanied by engineers, and they worked mainly with marines.
He also stressed that the specialists were not engaged in briefing, but took part in the hostilities.
Earlier, the Russian Investigative Committee stated that foreign mercenaries receive in Ukraine from 30,000 to 100,000 hryvnias.