MOSCOW / ST. PETERSBURG - A Russian war correspondent was killed and four other media workers injured in a Ukrainian drone strike in the Donetsk region, Russia's RIA Novosti news agency reported Saturday.

The drone struck a car carrying Russian journalists on the Donetsk-Gorlovka highway, killing Alexander Martemyanov, a stringer for the Russian newspaper Izvestia, the report said.

"After filming the aftermath of the shelling in Gorlovka, we were returning to Donetsk. On the highway, a kamikaze drone struck our car," said RIA Novosti correspondent Maxim Romanenko, who was among the injured.

Denis Pushilin, head of the Donetsk region, said on Telegram that all injured journalists are receiving medical treatment.

ALSO READ: Russia says it downs over 100 Ukrainian drones

Russian Foreign Ministry spokesperson Maria Zakharova said those attacks against Russian journalists will face "deserved and inevitable punishment."

Meanwhile, four drones were shot down in Russia's Leningrad Oblast, regional Governor Alexander Drozdenko said Saturday.

"The night and morning of Jan 4 saw a record number of UAVs destroyed. Four aircraft were downed over the Leningrad Oblast with the use of electronic warfare and small arms," Drozdenko wrote in a post on social media Telegram.

He said there were no casualties or damages and the drone threat warning has been canceled.

READ MORE: Reports: Ukraine hits 3 Russian military airfields with drones

Pulkovo Airport in St Petersburg imposed temporary flight restrictions twice overnight and in the morning for safety concerns.