BOISE -- The Ada County coroner says a two-year-old boy involved in an accident on Arrowrock Road late Friday night died at a Boise hospital Monday night.
Idaho State Police say 31-year-old Lawrence Lutton of Lowden, Wash., was driving west in a 2000 Toyoto Corolla with his two sons when his car left the roadway and went into the reservoir.
A passerby transported a four-year-old boy to St. Luke's Medical Center in Boise, while two-year-old Riley Lutton was flown by air ambulance to St. Luke's.
The coroner says Riley died at the hospital at 7:30 p.m. Monday. The cause of death is still pending.
Idaho State Police are continuing to investigate the crash.
Family and friends of the family have set up a website to help fund medical and funeral costs.