According to him, “some people were interrogated” while they were crossing the checkpoint in Donbas.
Matios said that within the framework of the investigative process, Ukrainian law enforcement officers "establish everyone who has received such citizenship."
"At the moment, we actually own the situation for more than 13 thousand people - a significant part of them are identified, they cross the line of demarcation," he said.
On July 17, Russian President Vladimir Putin signed a decree allowing residents of all areas of Donbass to obtain Russian citizenship in a simplified mode.