GUANTANAMO BAY U.S. NAVAL BASE, Cuba - A Guantanamo war court judge threatened on Thursday to halt the case of a Canadian terrorism suspect captured at age 15 if the U.S. government fails to turn over records of his detention.

The judge, Army Col. Peter Brownback, ordered prosecutors to give a classified daily prison-camp log to the military attorney for Omar Khadr, who is now 21 and facing trial on charges of throwing a grenade that killed a U.S. soldier in Afghanistan in 2002.

Khadr and his lawyer say he was mistreated by his U.S. captors and coerced into making incriminating statements. On Thursday, Brownback set a May 22 deadline for the prosecutors to obtain and hand over the log, referred to as “Binder 2,” kept by the Guantanamo prison commanders.

He called it an essential hour-by-hour record of Khadr’s treatment. “On the 22nd, you all will give them a copy of Binder 2. If you don’t have it then at 1700 hours (5 p.m.) on the 22nd, we stop,” he said.