A U.S. military judge in Guantanamo Bay, Cuba, has denied a request by Omar Khadr's lawyers for an independent psychological evaluation of the Canadian detainee.

Army judge Col. Patrick Parrish said the services of two experts requested by the defence will be accepted only if prosecutors can't find government specialists with similar qualifications.

At a pretrial hearing this week, defence lawyers requested funding for two doctors with expertise in juvenile issues to examine Khadr, who was captured in Afghanistan at age 15. Khadr is accused of throwing a grenade that killed a U.S. soldier in 2002.

Parrish also rejected a bid to dismiss the charges against Khadr over the removal of the previous judge. Lawyers claimed that Col. Peter Brownback was taken off the case because of rulings favourable to the defence.

Khadr's military lawyer, U.S. navy Lt.- Cmdr. William Kuebler, accused the Pentagon of bringing in Parrish to speed up the process of getting his client to trial. The Pentagon said the switch was simply a scheduled rotation in personnel.

The details of Parrish's latest rulings were provided to reporters by Kuebler.