Two pilots were killed when a Russian fighter jet crashed into a residential building in the Siberian city of Irkutsk on Sunday, less than a week after another Russian warplane crashed in a residential area in southern Russia.

The Su-30 fighter jet was reportedly on a training flight when it struck a two-story building, but five residents who live there weren't home at the time and no casualties were reported on the ground, according to the Irkutsk region’s governor, Igor Kobzev. 

Irkutsk, an industrial city with more than 600,000 people, has an aircraft manufacturing plant that makes Su-30s, a twin-engine, two-seat jet.

Russia fighter jet crash

People look at the fire after a warplane crashed into a residential area in Irkutsk, Russia, on Oct. 23, 2022. (Associated Press)

Firefighters at scene of fighter jet crash in Russia

Firefighters work at the scene after a warplane crashed into a residential area in Irkutsk, Russia, on Oct. 23, 2022. (Associated Press)

Sunday's crash was the 11th reported noncombat wreck by a Russian military plane since Russian President Vladimir Putin launched the invasion of Ukraine in February.

AIR FORCE WARPLANES INTERCEPT A PAIR OF RUSSIAN BOMBERS NEAR ALASKA

Last Monday, a Su-34 fighter-bomber crashed in a residential area in the Sea of Azov port of Yeysk, killing 15 people and injuring another 19.

Russian fighter jet crash

Flames and smoke rise from the scene where a warplane crashed into a residential area in Yeysk, Russia, on Oct. 17, 2022. (Ostorozhno Novosti via AP)

Russian fighter jet crash

Flames and smoke rise from the scene where a warplane crashed into a residential area in Yeysk, Russia, on Oct. 17, 2022. (Ostorozhno Novosti via AP)

The U.K. Ministry of Defense said earlier this summer that Russia's air force has "underperformed" during the invasion of Ukraine. 

CLICK HERE TO GET THE FOX NEWS APP

"While Russia has an impressive roster of relatively modern and capable combat jets, the air force has almost certainly failed to develop the institutional culture and skill-sets required for its personnel to meet Russia's aspiration of delivering a more Western-style modern air campaign," the U.K. defense ministry said in June.

The Associated Press contributed to this report.