SARAJEVO, May 30 (Reuters) - Bosnia's top international envoy ruled on Friday that passports of 16 suspected supporters of a war crimes fugitive be seized.

He also dismissed an intelligence official suspected of helping the fugitive, Stojan Zupljanin, a Bosnian Serb who is accused of war crimes in Bosnia during the 1992-95 war there.

Zupljanin is among the four remaining fugitives from the Balkan wars of the 1990s sought by the U.N. war crimes tribunal in The Hague, along with Bosnian Serb suspects Radovan Karadzic and Ratko Mladic and Croatian Serb Goran Hadzic.

"There is clear evidence which shows that these 16 individuals have met or had contacts with Stojan Zupljanin since he became a fugitive from international justice," Slovak diplomat Miroslav Lajcak said in a statement.

The men are subject to investigation by the Bosnian authorities and the measure was aimed at preventing them from leaving the country, said Lajcak. He did not want to name them.

Lajcak also said that he decided to remove a low-ranking official from Bosnia's Intelligence and Security Agency "because of links to indicted war criminals or the networks that allow them to remain at large".

Zupljanin, the former police commander, has been indicted by the International Criminal Tribunal for the Former Yugoslavia of war crimes against Muslims and Croats in western Bosnia early in the 1992-95 Bosnian war.

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