The Honolulu Fire Department is calling a string of separate brush fires in Kamilonui Valley over the past several weeks suspicious.

Fire crews responded to a small brush fire in Kamilonui Valley in Hawaii Kai early this evening that burned less than two acres.

Helicopter water drops and rain helped douse the fire, but a fire crew stood watch overnight for any flareups.

Crews were dispatched at 5:58 p.m. and arrived at 6:10 p.m.

The fire was highly inaccessible by foot, so Air 1 was used to make water drops, said fire Capt. David Jenkins.

Jenkins said the large number of fires in close proximity to one another makes them suspicious in nature and is asking for the public’s help.

Anyone witnessing suspicious activity before, during or after these fires are asked to notify police or the fire department by calling 911 or CrimeStoppers at 955-8300.