VAUGHAN, Ont. -- Recipe Unlimited Corp. says some of its Swiss Chalet, Harvey's, East Side Mario's and other restaurants are experiencing a partial network outage after a malware outbreak.

The company says it learned of the outbreak on Friday and as a precaution took a number of its systems offline and suspended internet access to affected locations.

Some restaurants have been unable to process credit and debit card transactions as a result, though all of them can manually process credit card charges.

A small number of restaurants have temporarily closed.

The company says it's continuing to work with security experts to resolve the situation.

It did not immediately respond to a request for comment.