Censor.NET reports referring to the State Border Guard Service press office.
"Militants opened fire at around 9 p.m., using small arms and AGS-17. The attack was coming from the direction of Oleksandrivka village located in the uncontrolled territory," the message says.
None of the Ukrainian defenders sustained injuries while their guns kept silent.
"Russian mercenaries repeatedly fire on road corridors and border guards' positions. Overall, more than 30 attacks on the units of the State Border Guard Service have been recorded since the beginning of the year," the press office added.
As previously reported, on June 5 Russian troops attacked ATO forces positions 77 times.