An Austrian court has ordered the extradition of Ukrainian businessman Dmytro Firtash to the US.
He was taken into custody on a European arrest warrant hours later.
He is wanted by the US on bribery charges.
After being arrested there in 2014, he was released after paying €125 million for bail.
He then remained stuck in Austria until this latest court order.
Firtash is Ukraine’s 16th richest man.