CLEARWATER -- Divers, boats and a helicopter are being used today as the search is expanded for the body of a teacher killed in a car crash along with her husband north of Kamloops on Sunday.

The body of Courtney Buck -- who was seven months pregnant -- remains missing after the body of her husband, Skye, was found in the couple's vehicle when it was pulled out of the North Thompson River, where it sank after skidding off Highway 5.

RCMP Constable Lesley Smith says a Mountie dive team is using sonar equipment in areas too dangerous to enter, while fisheries department boats and a police helicopter are also helping in the search.

Skye and Courtney Buck were both teachers in the small town of Clearwater.

A memorial award has been set up to honour the couple.

Fellow teacher Elizabeth Devries says donations to the Skye and Courtney Buck Memorial Award can be made through the Thompson Rivers University Foundation.

She says a decision on how the money can be used will made later, but it's important to give family and friends an immediate sense that they are doing something to deal with the terrible loss.

© Copyright 2013