The Hague war crimes tribunal on Thursday rejected Vojislav Seselj's motion that the proceedings against him be dropped because of an allegedly drawn-out trial, the UN court said.
The Serbian Radical Party leader is on trial for crimes committed against non-Serbs in Croatia, the northern Serbian province of Vojvodina and Bosnia and Herzegovina in 1991-93.
Seselj filed a motion that the proceedings against him be dropped, claiming that his right to a prompt trial had been violated.
He made the same request orally in 2009, but it was rejected.
He has been in the tribunal's custody since 2003.