Youths have been blamed for starting two fires in Catterick Garrison this week.
A fire crew from Richmond responded to a report of a hedge on fire in Richmondshire Walk at about 6pm on Tuesday.
They used a hose reel to extinguish a small area of shrubbery.
A spokesperson for North Yorkshire Fire and Rescue Service said the fire was believed to be deliberately started by youths.
Around 50 minutes later, the crew responded to a report of a rubbish fire in Shute Road.
They again used a hose reel jet to extinguish it.
This fire was also believed to have been started deliberately by young people.