LAWRENCE, Kan. (AP) -- Investigators in Lawrence are looking into the latest in a string of fires at apartment buildings.

The Lawrence Journal-World reports (http://bit.ly/X0jLZE ) reports no one was injured in the fire early Sunday at a complex on West 24th Street. Crews quickly extinguished the smoky blaze.

A report released Monday by Lawrence Fire Chief Mark Bradford says the fire was deliberately set. No other information was released, and Bradford did not say whether officials believe it was related to several others in the area.

The Journal-World says it used an open-records request last week to obtain all fire reports in the city since Oct. 19. The newspaper says the reports show nine fires fitting a similar pattern. Eight occurred at multi-unit apartment complexes, and five are listed as arson.