A small plane crashed in Russia’s Kemerovo region in southwestern Siberia on Saturday, claiming 4 lives and leaving 4 others badly injured, the local emergency medical service reported.

Earlier in the day, TASS news agency reported that at least 7 people were killed when the twin-engine L-410 crashed near the Tanay aerodrome, which provides parachuting services.

TASS also quoted the local prosecutors’ office as saying the crew had sent a distress signal about engine failure.

Pictures of the heavily-damaged plane with an ambulance nearby were released on social media platforms.

A search and rescue operation is under way, said a spokesman at a Siberian branch of Russian civil aviation agency Rosaviatsia, but declined to provide more details.