A former Bosnian vice-president, suspected of war crimes, has been arrested by the British police at a London airport on behalf of Serbian authorities.
Ejup Ganic, 63, was detained under a provisional extradition warrant at Heathrow airport on Monday for alleged "conspiracy to murder", police said in a statement.
Police said Serbia had issued arrest warrants against Ganic and more than a dozen others for conspiring to kill wounded soldiers, in breach of the Geneva Convention.
Serbia has said Ganic and a number of other people are suspected of war crimes, and blames them for the 1992 attack on a Yugoslav convoy in Sarajevo, when more than 40 soldiers were killed.
The attack took place at the start of the 1992-95 war which erupted when Bosnia declared independence from the former Yugoslavia.
Ganic, who has appeared at City of Westminster Magistrates' Court, was remanded to custody until March 29, the police statement added.
Al Jazeera's Aljosa Milenkovic, reporting from Belgrade, said Ganic had been detained at the London airport once before on February 26, while on his way to Libya.
He was, however freed a day later, prompting the Serbian Interpol office to demand an explanation from the UK.
"But today apparently the UK police are acting on the same warrant issued by Serbia and the Serbian special prosecution office," Milenkovic said.