Five Quebecers are facing charges in connection with a notorious international child pornography investigation.

Provincial police say they made arrests Tuesday and the five were expected to appear in court later in the day.

The charges stem from a massive investigation that originated in Amsterdam in 2010, with the arrest of a daycare worker in connection with an international child-porn ring.

Robert Mikelsons’ computers were analyzed by Dutch police and information on it allegedly led back to five Quebecers.

Quebec provincial police began investigating in this country, in December 2011.

Provincial and municipal police made arrests today and executed warrants in five locations in five cities including Montreal, Quebec City and Gatineau.

Four men, aged between 29 and 60, face charges of producing, possessing and distributing child pornography.

Police say another man remains on the lam.