Russia continued to send waves of drones towards the Ukrainian capital Kyiv on Friday, repeatedly forcing residents into shelters and disrupting life across the city for a second consecutive day.

The attacks followed an extraordinary day of disruption on Thursday, when Kyiv spent almost 15 hours under air-raid warnings, with sirens sounding 13 separate times, according to the Foreign Ministry.

“Again and again throughout the day, sirens sounded as Russia launched drones in small groups towards the Ukrainian capital. Each new threat put people at risk and forced them to seek safety,” the ministry said.

The continuing attacks mean Kyiv has already faced at least 23 separate air-raid alerts in less than two days, disrupting work, transport and everyday life.

Ukrzaliznytsia, the state railway operator, said prolonged air-raid alerts caused significant delays, with the disruption expected to continue for at least another day.