On the Ukrainian side, it is reported that around 100 drones have crashed into the country.
In the Dnipropetrovsk region, Governor Serhij Lysak is sounding the alarm about a hit on a residential building where a 12-year-old girl was killed and another girl and two adults were injured. An image he posts on social media, said to be taken there, shows a shattered villa surrounded by debris.
On Monday evening, one person was killed in a Russian attack on the Tjernihiv region in northern Ukraine. On Tuesday morning, several deaths are reported in more intense Russian shelling in partially occupied Donetsk in the east.
The Russian side claims to have shot down about 90 drones over a large number of Russian regions as well as over annexed Crimea.
In the border region of Belgorod, a Ukrainian drone is said to have crashed into a vehicle where five men were sitting, killing two, according to the region's governor Vjatjeslav Gladkov.
At least a couple of Ukrainian drones reached as far as the capital area around Moscow, according to the Russian military's account.
The reports of extensive drone attacks come a day after Russian President Vladimir Putin declared a unilateral ceasefire, which is to apply for three days in connection with the so-called Victory Day, which is celebrated in Russia on May 9. The Kremlin has declared similar ceasefires before, without any agreement with the opposing party and without much effect on the ground.
Mediating USA has said that this week will be crucial for the peace process that the country has initiated.
