Automatic sprinklers doused a Salt Lake apartment fire today that Honolulu Fire Department investigators determined was intentionally set.

The 3:40 p.m. fire, which started in the kitchen of unit 204 of the Country Club Plaza complex at 5090 Likini St., was nearly extinguished by the sprinklers when firefighters arrived, said HFD spokesman Capt. Earle Kealoha.

Paper and cardboard were set on fire in the kitchen, Kealoha said. No one was at home and no injuries were reported.

The fire caused an estimated $50,000 structural damage to unit 204 and $1,000 loss to contents, Kealoha said. An adjoining apartment and first-floor unit sustained water damage.

Police have made no arrests in the arson investigation.