Sniffer dogs found traces of bedbugs in the provincial court in St. John's on Tuesday.
Chief Judge Mark Pike said two dogs both found bedbugs on a judge's chair after they picked up the scent in courtroom number four.
The chair will be destroyed and the court fumigated for the bedbugs.
Bedbugs are tiny parasitic insects that feed on blood, often unnoticed, and cause itchy welts. They're also notorious for being difficult to eradicate.
A court memo said that three weeks ago a female sheriff was bitten by a bedbug in the same courtroom. But no bedbugs were found by the pest-control company Orkin Canada.
Bedbugs were previously found in the provincial court in 2012. Since then, inspections by dogs are done weekly in the court.