WorldKyiv was under heavy Russian attack early Tuesday, with a large pillar of ‌smoke seen rising from the Ukrainian capital and authorities urging residents to seek shelter, according to witnesses and officials.A 24-storey apartment building collapsed after a strike leaving many trapped under rubbleThomson Reuters · Posted: Jun 01, 2026 9:10 PM EDT | Last Updated: 1 hour agoListen to this articleEstimated 2 minutesThe audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results.A woman prays while sheltering in a metro station during a Russian air attack on Kyiv early Tuesday, amid Russia's attack on Ukraine. (Alina Smutko/Reuters)A major Russian attack targeted Kyiv early Tuesday, injuring at least four people and heavily damaging an apartment building in the Ukrainian capital, according to witnesses and officials.Kyiv Mayor Vitali Klitschko said a ‌suspected missile strike on a 24-storey apartment building caused a collapse and that people might be trapped under the rubble. A fire broke out on ​the grounds of a non-residential property in the Podil district, and a nine-storey ​apartment building was on fire after debris apparently struck the roof, the mayor said. "In the ⁠Obolon district, ⁠cars are burning after ‌being struck by falling missile debris. There are also fires at two locations in open areas, including one near a kindergarten," Klitschko said on Telegram.Thousands of Kyiv residents ‌were taking refuge inside metro stations and other shelters after air raid warnings. People take shelter inside a metro station in Kyiv amid an attack by Russia. (Alina Smutko/Reuters)'Massive strike' possible, says ZelenskyyUkrainian ⁠President Volodymyr Zelenskyy on Monday reiterated warnings of a possible major Russian strike and urged residents to pay special attention ‌to air raid alerts."Intelligence warnings regarding Russian strikes remain in effect. A massive strike is possible, they have prepared one," Zelenskiy said in his nightly video ​address."Our defenders are ready 24/7 to the fullest extent possible with ⁠the supplies currently available."Russia last week warned that it ⁠intended to launch "systematic strikes" on targets in Kyiv ⁠linked ⁠to the Ukrainian military ​as well as decision-making centres, and urged foreigners to leave.It ​said the action ⁠was in response to a drone strike last week on a dormitory in Ukraine's Russian-held Luhansk region which killed 21 people. Ukraine denied carrying out the attack. WATCH | Robots being used in war:Robots are reshaping how wars are foughtMay 23|Duration 6:04Unmanned drones and robots are changing how wars are fought, including on the battlefield in Ukraine. For The National, CBC’s Murray Brewster goes to Latvia where soldiers are training to take on the new enemy.Russia ​has targeted Ukraine's power supplies and infrastructure while Ukraine has stepped up attacks on oil facilities inside ​Russia this year, sometimes ⁠resulting in casualties. Both sides deny targeting civilians.The war in Ukraine has ground on for more than four years since Russia launched its full-scale invasion in February 2022. Efforts to end the conflict have made little progress, with the U.S. administration of Donald Trump focused on conflicts in ⁠the Middle East.