It's being described as one of the largest crystal meth seizures in Grey and Bruce Counties.

On Saturday,  following a two month drug investigation, Hanover Police executed a pair of search warrants in the300 block of 10th Street and the 200 block of 11th Avenue.

Officers discovered 18.45 ounces (516.6 grams) of crystal methamphetamine, a small quantity of hydromorphone, a small quantity of suspected cocaine and Percocet tablets.

The total street value of the drugs seized is estimated to be $51,000.

Also seized were prohibited weapons and $2,885 in cash.

Three Hanover residents were charged with various drug and weapons offences.

An arrest warrant has been issued for a former Owen Sound woman for her alleged role.