Part of an apartment ​building has collapsed in the Russian ​city of Syzran on the Volga River ⁠after a Ukrainian drone attack, injuring 11 people, ​local authorities said on Wednesday.

Ukraine has increased attacks ​on Russia’s energy infrastructure in recent months as US-brokered peace talks have been paused, with Washington focused on ​the war in Iran.

A large oil refinery is ​located in Syzran, some 1,000 km from the ‌border ⁠with Ukraine.

The governor of the Samara region, Vyacheslav Fedorishchev, said in a post on the Telegram messaging app that four people, including one ​child, have ​been rescued.

⁠Search-and-rescue operations are continuing, he added.

The RIA Novosti news agency, citing local ​emergency services, said 11 people, including ​two ⁠children, were injured.

Separately, the governor of the Kursk region, which borders Ukraine, said a drone fell ⁠into ​the yard of a house; ​36 people were evacuated, and no one was injured.