Fox News cameraman and journalist, Pierre Zakrzewski who was killed in Ukraine was confirmed to be an Irish citizen.
Taoiseach Michael Martin confirmed in a tweet that Zakrzewski was a citizen of Ireland when he was killed along with local journalist Oleksandra Kuvshynova on the outskirts of Kyiv.
Reporter Benjamin Hall was also injured in the attack and is receiving treatment in hospital.
Read More: Dublin man's unusual symptom that led to cancer diagnosis
In the Taoiseach's tweet, He wrote: "Deeply disturbed and saddened by the killing of Irish citizen and journalist Pierre Zakrzewski and one of his colleagues today.
"My thoughts are with their families, friends and fellow journalists. We condemn this indiscriminate and immoral war by Russia on #Ukraine."
In a tweet Fox News anchor John Roberts said it was "horrible news to report."
"I worked with Pierre many times around the world," he added.
"He was an absolute treasure. Sending our most heartfelt prayers to Pierre’s wife and family."
Fox News chief executive Suzanne Scott tweeted: "It is with great sadness and a heavy heart that we share the news this morning regarding our beloved cameraman Pierre Zakrzewski. Pierre was killed in Horenka, outside of Kyiv, Ukraine."
"Pierre was with Benjamin Hall yesterday newsgathering when their vehicle was struck by incoming fire. Pierre was a war zone photographer who covered nearly every international story for FOX News from Iraq to Afghanistan to Syria during his long tenure with us."
"His passion and talent as a journalist were unmatched. Based in London, Pierre had been working in Ukraine since February."
Read More: Mam says losing her son ‘is not an option’ as he battles intense brain cancer
Read More: Ukraine war: Dubliner makes 5,000km round trip to Poland with van full of supplies for refugees