A MARYBOROUGH detective charged with assaulting an intellectually disabled man tried to hide police records of the incident, a court has heard.
Grant Allan, 42, is standing trial for charges of intentionally causing serious injury, assault, perjury and perverting the course of justice.
He is accused of bashing 49-year-old Darren Joy during a raid on Mr Joy's home in March 2010.
In an opening address to the jury in the County Court, Crown Prosecutor Gary Livermore said Allan "choke-slammed" Mr Joy and broke his collarbone.
He said Allan later lied on oath when the matter was investigated by the Office of Police Integrity (OPI).
Allan, who has since been suspended from the police force, allegedly threatened Mr Joy during the raid and told him to "make it easy for yourself and tell us where the cannabis is".
Police found a small amount of cannabis residue and one bong in the home.
The court heard Allan grabbed Mr Joy by the scruff of the neck and threw him head first to the ground.
Mr Joy said in his evidence on Tuesday he was left "seeing stars".
"He (Allan) lost it. He grabbed me with both hands around my neck and choke-slammed me to the floor. He then said don't tell anyone about this or I'll smash your grandmother's ornaments."
The OPI seized files and diaries from the Maryborough Police Station in the weeks after the raid.
The court was told intercepted phone conversations revealed Allan organised for a colleague to remove his police day notebook from his desk.
Mr Livermore said that represented an attempt "to thwart the investigation".
Defence Counsel for Allan, Geoffrey Steward, told the jury the OPI had been "afflicted by tunnel vision" and had not conducted an independent investigation.
Mr Steward said Mr Joy's evidence could not be relied upon because his account was "self-serving and grossly exaggerated".
"He is a relatively small-time drug trafficker who has milked this incident for all it's worth," he said.
He argued there were key questions over whether Allan had acted in a corrupt manner.
The trial has been scheduled for five weeks.