DERBY, Kan. - A house was heavily damaged by fire in the 400 block of west Lincoln near K-15 and Meadowlark in Derby. A passerby spotted flames coming from an attached garage around 5:30 this morning. The residents were alerted by a smoke detector and made it to safety without injury. Firefighters were able to revive a pet cat that had been overcome by smoke. Cause of the fire is under investigation.