The "fraudulent scheme" allegedly cost investors billions of dollars.
Michael Pearson had been facing criticism and recently struck a defiant tone after calls for his dismissal surfaced.
The price of Valeant shares has fallen about 70 per cent since August.
Quebec's securities regulator says it hasn't launched a formal investigation into Valeant, which has its headquarters in Laval near Montreal, but is watching the situation "very seriously.''
It looks like we could soon be adding another to the growing list of great Canadian corporate flame-outs. There was Nortel
NEW YORK - Valeant Pharmaceuticals International Inc. says that federal prosecutors are seeking information on the drug developer's