Detectives not sure when all files were erased

OPP Det. Const. Andre Duval was before the justice committee Thursday morning as PC members hunted for anything that will tie Premier Wynne to the scandalous ad hoc erasure of computer files related to the gas plant cancellation. But Duval had to testify that he didn’t know when most of the computers were wiped. Experts have been able to nail down a date on four of the laptops but it remains unclear when the other 20 were wiped..The dates are important because the Opposition says the date range in a requested search warrant goes past Kathleen Wynne’s swearing in as premier.  Premier Wynne denies any files were accessed after she took over from Dalton McGuinty.