Halifax Regional Police seized 6.2 kg of fentanyl and 10.5 litres of GHB during a September raid in Dartmouth. Police displayed the drugs at a news conference in Halifax on Wednesday, calling it the largest seizure of its kind in Atlantic Canada. Officers also recovered 1,400 fentanyl pills and nine bottles of GHB. The drugs were found in a search of a home in Dartmouth, N.S., last month. Health Canada later confirmed the substances were fentanyl and GHB to police, and the display came weeks after the seizure. During the search, three people were arrested and are facing trafficking charges. Staff Sgt. Nick Pepler said police believe the suspects were not acting alone and that organized crime likely helped bring the drugs into the Halifax area. Police also seized a Glock switch, a device that can convert a Glock handgun into an automatic weapon. Pepler said a fully automatic firearm on Halifax streets is a concern. Police put the bulk street value of the fentanyl at $500,000 and the GHB at $5,000. No charges were laid against police over the operation, because disciplinary bodies did not recommend charges.