A Russian ballistic missile strike near Kyiv on Friday killed at least 10 people and injured nearly 100 others after hitting a site hosting a defence industry event, Ukrainian officials said.
The attack came a day after Ukrainian President Volodymyr Zelenskyy met in Kyiv with senior representatives of US defence company Raytheon, which manufactures Patriot air defence systems that Ukraine says are essential to counter Russia's ballistic missile attacks.
Raytheon did not immediately comment on whether any of its employees were present at the event.
"Missiles for Patriot systems are the number one priority," Zelenskyy wrote on social media while confirming the attack.
According to acting regional military administration head Ruslan Oliinyk, the missile struck the grounds of a privately operated military training facility in Bucha district, about 20 to 30 kilometres from central Kyiv. The site was hosting a defence-related gathering when it was hit.
Emergency teams rushed to the scene, where 27 houses and 44 vehicles were also damaged, officials said.
The Ukrainian Defence Industry Council, the country's largest association of private defence manufacturers, confirmed that industry representatives were attending the event, but did not disclose further details.
Prosecutor General Ruslan Kravchenko said authorities had launched a war crimes investigation into the Russian strike, along with a separate probe into possible negligence over the organisation of the event. Investigators will examine who approved the venue, timing and format of the gathering and whether sufficient safety measures had been taken.
The Ukrainian government later imposed restrictions on reporting details of the attack.
Meanwhile, Ukrainian officials said a separate strike on a military facility in Russia killed six people and injured 26 others, according to the regional governor.
Zelenskyy pushes for Patriot co-production
The meeting between Zelenskyy and Raytheon representatives took place less than three weeks after US President Donald Trump pledged to allow Ukraine to produce Patriot systems under licence.
Zelenskyy said the company was ready to work with Ukraine on the joint production of Patriot interceptor missiles, adding that government officials and private-sector representatives would continue discussions on the project.
Ukraine has repeatedly urged its Western allies to provide more Patriot systems, which are considered one of the few effective defences against Russian ballistic missiles. While Ukraine has developed its own air defence technologies, officials say expanding domestic production remains critical, though experts caution that establishing local manufacturing could take years.
The meeting also reflected improving ties between Kyiv and Washington. Laura Loomer, a prominent Trump ally, also visited Kyiv on Thursday and criticised Russian President Vladimir Putin over missile attacks on Ukraine.
Ukraine expands drone strikes inside Russia
Ukraine has continued stepping up long-range drone attacks inside Russia, targeting military and logistical infrastructure as it seeks to disrupt Moscow's war effort.
On Friday, Zelenskyy said Ukrainian forces had struck an oil facility about 1,350 kilometres from the Ukrainian border, along with a military plant in Russia's Kirov region that produces aircraft and missile components.
Regional Governor Alexander Sokolov said six people were killed and 26 injured in the attack on the military facility. Russian outlet Astra identified the site as the Avitec plant, which manufactures air defence missiles and aircraft components.
Ukraine also targeted several logistics centres belonging to Wildberries, Russia's largest online retailer. Company founder Tatyana Kim said warehouses in St. Petersburg, the neighbouring Leningrad region and Simferopol in Russian-annexed Crimea came under attack. Russian media published images showing thick smoke rising over St. Petersburg.
Ukrainian forces had struck four other Wildberries facilities earlier this week, causing major fires.
Kyiv says its campaign aims to disrupt Russia's military logistics and bring the impact of the war closer to ordinary Russians.
Russia's Defence Ministry said its air defence systems shot down 571 Ukrainian drones overnight.