Ukraine has attacked warehouses and other facilities outside Moscow while Russia continued missile and drone strikes in Kyiv and other Ukrainian sites.
The Russian military says it struck more than 800 Ukrainian drones from Saturday night to Sunday morning.
The mayor of Moscow said in a social media post that 201 drones were destroyed in the region.
The governor of the Moscow region said drone attacks triggered a fire at warehouses of the largest Russian e-commerce operator, Wildberries.
Drone attacks also caused damage to houses and other structures in the Moscow region and the southern region of Rostov, killing six people.
Ukraine saw Russian attacks with ballistic missiles, drones and other weapons in multiple places through Sunday morning.
Two people were killed and another was wounded in the southern region of Zaporizhzhia. In the capital, Kyiv, Russian strikes triggered fires, injuring at least three people.
Ukraine has a severe shortage of interceptor missiles. President Volodymyr Zelenskyy is calling on other countries to help strengthen his country’s air defense.
The Ukrainian Air Force said earlier this month that it would limit disclosing the number of ballistic missiles it has intercepted.
Britain’s Financial Times has quoted Ukrainian officials as saying that the change was made to avoid revealing how many missiles Ukraine’s air force has failed to intercept as well as to preserve public morale.