Aynsley Aurora Kinch, 35, was last seen July 13, 2007, two days before her body was found in a field in the northwest corner of the city. ((Winnipeg Police handout))

A 49-year-old man was arrested and charged Mondayinthe killing of Aynsley Aurora Kinch, a sex-trade worker whose body was found in July in a field northwest of Winnipeg.

The suspect, whose name hasn't been released by Winnipeg police, was arrested in jail andcharged with second-degree murder.

The body of Kinch,35, was found on the morning of July 15 in a field near Murray Avenue. The mother of three, who was known onthe streets as Charlotte,was last seen two days before her body was found.

Police said Kinch knew the suspect,but would not reveal any details about their relationship. Little other information about the case was released.

Kinch's body was one of three found in the northwest corner of the city in recent years, leading some in the community toraisethe spectre ofa possible serial killer stalking city prostitutes.

Insp. Tom Legge said the mancharged Mondaywas arresteddays after Kinch's body was found, andremained in custody at the time of the most recent killing, that of Fonessa Bruyere, 17. Policedid not release information on the previous charges.

Bruyere was last seen Aug. 9; her body was found Aug. 30. The other woman whose body was found in the area, Therena Silva, was killed in 2002.

Police have previously said the evidence collected in Bruyere's, Kinch's and other cases did not lead them to believe the same person was responsible for the deaths.

Investigators said they expect to release more information on the Kinch case Tuesday.