At least 12 people were killed and several more wounded Tuesday when Russia struck Kyiv and the surrounding region for the ⁠sixth consecutive day.

Russia, which ⁠began its full-scale invasion of its smaller neighbor in 2022, has escalated its air attacks against Ukraine in recent months, as its progress has slowed dramatically on the battlefield.

Swarms of drones have plagued Kyiv and nearby areas in ​the last five days, killing residents, damaging homes and warehouses. Many of them are newer versions, ​powered ⁠by jet engines, making them harder to intercept. The near round-the-clock attacks have upended daily routines for millions with hourslong air-raid alerts.

More explosions were heard in the capital on Tuesday morning, a Reuters witness said.

Ukraine's Foreign Minister Andrii Sybiha said Russian drones and ballistic missiles had targeted residential areas and railway infrastructure in the heavy overnight attacks.