In this June 24, 2018 photo released by NASA, the Russian Soyuz MS-09 crew craft (L) and the Northrop Grumman (formerly Orbital ATK) Cygnus space freighter are attached to the International Space Station.

MOSCOW, Sept. 4 (Xinhua) -- Russia's Energia Rocket and Space Corporation (RSC) will check all the Soyuz and Progress spacecraft to establish a reason for air leak on the International Space Station (ISS), Russian media reported Tuesday.

RIA Novosti news agency quoted a source in the space industry as saying that the inspection of the spacecraft based in Korolyov in the Moscow region will start in the next few days. The checking of those located at the Baikonur cosmodrome in Kazakhstan will begin next week.

On Thursday, astronauts of the ISS detected a minor air leak on the Russian Soyuz spacecraft docked to the station, which they patched on Friday.

On Monday, Russian State Space Corporation Roscosmos' head Dmitry Rogozin told reporters that a special commission was checking whether there was a deliberate drill impact on the Soyuz spacecraft's skin or it resulted from a manufacturing defect.

He said that the spacecraft had been damaged from the inside and the initial version that the leak was caused by a meteorite had been ruled out.

"It is a matter of honor of Energia RSC to find out who did it, whether it was a defect or an intentional action, and where it was done - on Earth or already in orbit," TASS news agency quoted Rogozin as saying.