OTTAWA — A child pornography investigation that began in Australia 18 months ago has followed a circuitous path around the world into the homes of nine arrested Canadians.

Canadian and international police agencies announced the arrests Tuesday, and said another 50 ongoing investigations continue in this country.

The charges relate to a horrific child porn website based in Ukraine that provided customized videos of sexual abuse to paying customers worldwide.

All nine of the Canadians arrested so far were men and at least one, arrested two weeks ago in Peel Region, just outside Toronto, was a former Scout leader.

Police have no evidence of Canadian child victims to date, although one suspect still at large is alleged to have communicated a desire to get his daughters involved.

"I would say that there will be more arrests," RCMP Supt. Earla-Kim McColl told a news conference in Ottawa.