Spanish police arrested a suspected Serb hit-man wanted in the murder of a Kosovo Albanian human rights activist believed to have had evidence implicating Slobodan Milosevic in dozens of murders, authorities said today.

Spanish police arrested the alleged killer of a Yugoslav human rights leader who had papers on him incriminating former Yugoslav President Slobodan Milosevic in assassinations when he was gunned down in 1990, authorities said today.