Britain should apologise to a former Bosnian president for "mistreating" him in prison, the chairman of the joint presidency of Bosnia-Hercegovina said.

Former Bosnian President Ejup Ganic, 64, was arrested at Heathrow over war crimes allegations on 1 March at the request of Serbia. He was later bailed.

Haris Silajdzic, chairman of the joint presidency of Bosnia-Hercegovina, said Mr Ganic was denied basic rights.

Mr Ganic is accused of killing wounded Bosnian Serb soldiers in 1992 during the Balkan wars.

His lawyers say moves to make him face trial in Serbia are politically motivated and his arrest was illegal.