ACT Fire and Rescue and ACT Rural Fire Service extinguished several grass fires at Kaleen and Tuggeranong on Tuesday.
All fires appeared suspicious and will be handed over to police for investigation.
Six units were called to four grass fires near Haydon Drive and Ginninderra Drive in Kaleen.
Each of the fires covered an area of about 100 metre x 20 metres.
Three units extinguished a small grass fire on Kambah Pool Road at Tuggeranong. The fire was about 50 metres x 2 metres in size.