It may be the biggest crystal meth bust in Ontario history.

Nine police agencies have wrapped up an 18-month investigation with 17 arrests in Hamilton, Halton, Niagara, Peel, Haldimand County and Sudbury.

Some 175 officers raided 23 homes and businesses, netting one of the largest ever seizures of methamphetamine --- or crystal meth --- in Ontario.

Police have scheduled a news conference in Hamilton this morning to talk about operation "Project Newton."