The air defense of the Kyiv region is actively responding to the attack of Russian drones, the mayor of Boryspil on the outskirts of Kyiv said on Monday evening, CNN reports.

“There is an air defense system operating over our city, so I strongly recommend everyone to stay in shelters,” Volodymyr Borysenko said on Facebook. “The situation is under control. Our armed forces are doing their job well. But the threat remains.”

“The bright streak of light is created by our military who are trying to see enemy drones, so don’t panic. Stay in shelters,” the mayor added.

At least four people were killed after Russia attacked the capital Kyiv with Iranian-made kamikaze drones on Monday, according to Ukrainian officials, who have repeatedly called on Western allies to provide Ukraine with more advanced air defense systems.

The Minister of Internal Affairs of Ukraine said that Kyiv security forces managed to shoot down 36 of the 42 attack drones launched by Russia on Monday.

“This shows that this attack did not achieve its goal. I think the goal was to surpass last Monday’s rocket attack. But today it did not happen,” Denys Monastyrskyy told Ukrainian Television.

Of the 42 drones, about 30 were targeted at Kyiv, he noted, adding that the others were targeted at Sumy and Dnipropetrovsk regions.