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"Investigators are classifying a grass fire in Roseville's Maidu Park as arson, the city said Monday.View fire photos\"It was non-accidental,\" Roseville Fire Battalion Chief Peter Hnat said. \"It was intentionally set.\"\u00A0The blaze scorched four homes, 30 acres and burned for several hours Friday afternoon. No one was hurt.\"It was in the middle of the field, so there were no natural ignition sources,\" Hnat said. \"We rule out anything that's manmade, so that leaves us with something incendiary -- arson.\"Investigators from both the Roseville Fire Department and Cal Fire determined the blaze had been set intentionally, according to a news release from the city of Roseville.The fire started just before 2:30 p.m., and spread fast because of windy and dry conditions.In addition to the four houses that sustained damage, one other structure burned. It will cost about $1 million to make all the repairs, city officials said.All of the homes involved had combustible wood-shake roofing materials ignited by flying embers from the fire, the release said.Officials said Friday the fire was considered suspicious, as witnesses reported seeing several children running from the scene after the blaze started. No one has been detained or questioned.\"It's criminal, it is,\" said homeowner David Ybarreta, whose yard was significantly damaged by the blaze.Anyone with information is asked to call 916-774-5070.\u00A0KCRA 3's Mallory Hoff contributed to this report.--Inside KCRA.com:More arson investigators brought in for Roseville fire4 homes damaged in Roseville 'suspicious' grass fireView photos"^^<http://www.w3.org/2001/XMLSchema#string>
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