Police in Ontario have arrested a man wanted in an alleged sex-slave case.

David James Leblanc, 47, was picked up about 200 kilometres northeast of Thunder Bay.

Police are also looking for 31-year-old Wayne Alan Cunningham, who they say could be headed to Calgary.

Both men face charges of forcible confinement and sexual assault.

Mounties began an investigation last week after a woman reported that a 16-year-old boy arrived at her doorstep chained at his wrists and ankles.

Two men reportedly held him against his will, sexually assaulted him over several days and talked about trying to sell him.