A Quebec hit man who turned police informant pleaded guilty on Tuesday to another 27 charges of first-degree murder related mainly to the province's biker war.
Gerald Gallant, who was already serving a life sentence for a 2001 slaying, also pleaded guilty to 12 charges of attempted murder and a handful of other charges.
Last week, acting on information provided by Gallant, provincial police arrested 10 people across Quebec in connection with dozens of murders linked to outaw biker gangs over a 25-year period.
Charges against those arrested include murder, attempted murder and conspiracy. Police are still looking for one woman with alleged ties to the case.
Operation Baladeur (Walkman) targeted suspects allegedly connected to biker gangs and organized crime, primarily in the Montreal and Quebec City areas.
Provincial police said the investigation focused on 28 cases of murder and 13 of attempted murder between 1978 and 2003.
Police said three of those killed were innocent, while two others were killed by mistake.
Most of the killings happened between 1994 and 2002 as the Hells Angels and Rock Machine gangs battled over drug turf.
Mr. Gallant came under surveillance a few years ago when investigators obtained a DNA sample he left on a restaurant glass.
The sample linked him to a 2001 slaying in Ste-Adele, in the Laurentians north of Montreal.
He was eventually arrested in Switzerland in 2006 as part of a sweep targeting cloned credit cards.
Mr. Gallant is currently serving a life sentence for the Ste-Adele killing.