NASHUA, N.H. - A Canadian man who's been tried three times for the 1988 slayings of two New Hampshire women has been ordered to remain jailed while he awaits a fourth trial.

Anthony Barnaby pleaded not guilty in September to murder charges.

Police allege Barnaby and 54-year-old Canadian David Caplin stabbed Brenda Warner and Charlene Ranstrom to death in October 1988 in the women's apartment.

Three juries failed to convict or acquit Barnaby, the last time in 1990. Murder charges against Caplin were dropped after courts tossed much of the evidence.

Barnaby and Caplin were ordered extradited from Canada in April after police said new DNA evidence and witnesses warranted another trial.

Barnaby's trial is scheduled to begin in September.