KYIV, Ukraine (AFP) — A Russian drone strike triggered a major fire and explosions at a warehouse on the outskirts of Ukraine’s capital Kyiv, forcing hundreds to evacuate the region, authorities said early Saturday.

Russia and Ukraine have for several months been intensifying their long-range strikes, increasingly targeting civilian infrastructure such as logistics warehouses and oil and port facilities.

These attacks are causing a growing number of civilian casualties.

The prosecutor’s office opened an investigation for “negligence” regarding storage conditions at the premises after the attack, which took place shortly after 8 p.m. Friday in the village of Myla, in the Bucha district.

A fire broke out and was “accompanied by explosions,” Tymur Tkachenko, head of the regional military administration, said on Telegram.

“More than 200 people have already been evacuated from the scene, including children,” he said adding that at least six people had been wounded.

The prosecutor’s office specified that its investigation would focus on “the legality of the... storage of explosive objects and materials on the enterprise’s grounds,” as well as whether the company, which was not named, had the “necessary permits and approvals.”

Prime Minister Sergiy Koretsky expressed regret that a “lesson” had not been learned after a previous deadly attack in July in Vyshneve, near Kyiv, on a munitions depot.

That investigation revealed serious failings on the part of the state-owned company, which did not comply with standards despite the proximity of residential buildings.