A British national has died in Ukraine, the government has confirmed.
The Foreign, Commonwealth and Development Office (FCDO) said the family of the deceased has been made aware.
A spokesperson for the ministry said: "We are supporting the family of a British national who has died in Ukraine, and are in contact with the Ukrainian authorities."
The Briton was killed in action while fighting alongside Ukrainian troops, according to reports.
The FCDO warns that British nationals fighting in Ukraine face a high risk of maltreatment.
Its website says: "British nationals fighting in Ukraine have been killed or captured. British nationals undertaking humanitarian work have also been detained by Russian authorities.
"The risk to life, or of maltreatment, is high."
Read more:
British troops train for war with Russia
Putin blames Ukraine after six killed in drone strike on school
Early on in the war, Ukraine's authorities said more than 20,000 people from 52 countries came to Ukraine's aid.
Since then, the number of foreign fighters in Ukraine's military has been classified.
(c) Sky News 2026: Death of British national confirmed in Ukraine
Hull promoted to Premier League after late Oli McBurnie goal against Middlesbrough in play-off final
The People's Tree: Winner of Sycamore Gap tree artwork competition announced
EasyJet diverts flight after passenger alerts crew to power bank in luggage
UK faces 'economic catastrophe' unless it adapts to young people 'rewired by smartphones'
Murder investigation launched after man, 60, dies following assault
On Air