British Foreign Minister Dominic Raab on Thursday welcomed the International Civil Aviation Organization (ICAO) investigation into the Belarusian President Alexander Lukashenko regime’s forced landing of a Ryanair flight on May 23.

“We join our international partners in wanting to know the full circumstances that led up to this grave violation of international law and the attack on the principles that underpin civil aviation,” Raab said in a statement quoted by Reuters.