An unnamed Ukrainian Lieutenant Colonel in Avdiivka, Donetsk Oblast Province of Ukraine, has reportedly expressed concerns over the possible implications of the ongoing invasion of the country by Russian forces.

This was confirmed in a tweet by Christopher Miller, a correspondent for Buzz Feed News, on Thursday.

”Ukrainian Lieutenant Colonel I’ve gotten to know well in recent months on the frontline in Avdiivka just texted me. ‘Under fire. This is the end…,’” said Miller.

READ ALSO: How Obiora Agbasimalo, LP’s Anambra Gov Candidate, Was Disappeared After His Uncle Changed His Driver, Security Detail

This followed an invasion of the country on Thursday morning after Vladmir Putin, the President of Russia, announced a “special military operation”, amid warnings from world leaders that it could spark the biggest war in Europe since 1945.

READ ALSO: ‘Ukraine Downs Five Russian Plane, One Helicopter’

Countries like the United States, the United Kingdom and France had in the past weeks predicted a Russian attack on Ukraine, urging their citizens to flee the country.

Since Russia annexed the Southern Crimea Peninsula about eight years ago, Ukrainian forces have been locked in a war with Moscow-backed rebels.