VANCOUVER -- A Crown prosecutor says a former RCMP officer who was involved in Robert Dziekanski's death colluded with his colleagues to lie about what happened to both investigators and at the subsequent public inquiry.

Former corporal Benjamin (Monty) Robinson was among four officers who went to Vancouver's airport the night Dziekanski was stunned with a Taser and died in October 2007.

All four officers were charged with perjury for their testimony at a public inquiry that was held in 2009.

Crown counsel Scott Fenton says all four officers made similar errors when recounting what happened to homicide investigators, and he says the only explanation is that they worked on a story together.

Fenton says a witness will also testify that the officers met at her house in February 2009, and he says the only conclusion that can be drawn is that they discussed their upcoming testimony.

One of the officers, Const. Bill Bentley, was acquitted of the perjury charge after a trial last year, though the Crown is appealing that verdict.