Members of illegal armed groups put Ukrainian army positions under automatic and mortar fire in the early hours of Monday, the leader of the Information Resistance group, Dmytro Tymchuk, has said.

"Automatic fire was opened on roadblocks of anti-terrorist operation forces near the urban-type settlement of Amvrosiyivka in the Donetsk region and Rubizhne in the Luhansk region," he wrote on Facebook on Monday morning.

He said an army post was also shelled near the Dovzhansky border checkpoint in the Luhansk region. About 30 mines were launched, he said.

A serviceman was injured in an attack on law enforcers' positions near the urban-type settlement of Kreminna, the Luhansk region, Tymchuk reported.