The incident was reported about 5 p.m. in a cul-de-sac off SW Everett Mall Way, officer Aaron Snell said.
Officers began life-saving efforts, but the child died at the scene, Snell said.
The driver was backing out of the driveway at the time, Snell said. Details about the driver, including whether he and the child were related, weren't released Friday night.
Detectives were called to the scene. The child's body was expected to be taken to the Snohomish County Medical Examiner's Office.
The investigation was just beginning Friday. There was no evidence of drugs or alcohol being involved, Snell said.
More Local News Headlines
Study says Paine Field should be used for business, not museum Judge likely to decide future of sex crime case against ex-sergeant Tamper-proof cigarette bins will cut down on litter Suspect sought in fatal Lynnwood shooting Mill Creek Police Chief Bob Crannell to retire Camano Island Fire and Rescue seeks volunteers; meeting Oct. 13 Arlington man died in motorcycle crash Front Porch: Help plant rain gardens Saturday in Edmonds
Our new comment system is not supported in IE 7. Please upgrade your browser here.