Foreign-made weapons were not used in attack on Shahed factory, oil refinery in Tatarstan - Ukraine's intelligence

He said this in a comment to Radio Liberty. Yusov refused to officially deny or confirm the involvement of the Main Intelligence Directorate or the Security Service of Ukraine in the events in Tatarstan.

"We will neither confirm nor deny officially. But we can see that the noise and hits continue on the territory of the aggressor state, and it continues at military facilities that are directly involved in Russia's genocidal war against Ukraine. We can state that foreign-made weapons and munitions of our partners are not used in these attacks. This is a fact," Yusov said.

The representative of the Defense Intelligence of Ukraine did not specify what weapons were used to hit the facilities in Russia, which are located a thousand kilometers from Ukraine, but he said that the Ukrainian drone industry is developing "very dynamically" and all the modern technologies available in the world are being used to improve it. In particular, work is underway to improve range, autonomy, and accuracy. 

"So far, additional information on this topic is undesirable for security reasons," Yusov said.

He also confirmed that a plant for assembling Shahed 'kamikaze' drones, which Russia labelled as Geran, had come under attack in Tatarstan. According to him, one of the buildings near the plant was hit by Russian air defense. 

"An interesting point is that part of the destruction of other neighboring facilities was caused by Russian so-called air defense, anti-missile defense. This is not the first time. Trying to shoot down some other targets, they usually harm themselves the most," Yusov added.

• On April 2, the authorities of the Russian Republic of Tatarstan, located more than 1,000 km from Ukraine, reported a drone attack on businesses in Yelabuga and Nizhnekamsk, allegedly resulting in casualties. The Main Intelligence Directorate reportedly attacked a factory that assembles Russian Shahed-136/131 strike UAVs.
• Defense Express military expert Ivan Kyrychevskyi commented on the attack on the oil refinery in Tatarstan and the effectiveness of air defense in the depths of Russian territory. He believes that it is in the depths of the Russian territory that Russians have more problems with air defense than Ukraine could have imagined. 
• Valeriy Romanenko, an aviation expert and leading researcher at the State Aviation Museum, believes that the strike was carried out by a Ukrainian Aeroprakt A-22 aircraft. It was used in an unmanned version and was loaded with explosives.