NOVATO (CBS SF) – A father suffered major injuries and his 4-year-old son has been hospitalized in critical condition after being struck by a driver suspected of being under the influence in Novato Wednesday night, police said.

Officers responded to the area of Alameda Del Prado near Posada Del Sol around 8:30 p.m. on reports of two pedestrians who were struck by a sedan traveling southbound on Alameda Del Prado.

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Investigators determined the 27-year-old victim and his son were struck in a crosswalk.

Police said the father was transported to Marin General Hospital for major injuries which are not considered life-threatening. His son was also taken to Marin General but was later airlifted to a children’s hospital in Oakland for life-threatening injuries.

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As of Thursday, the child has been listed in critical condition.

The driver, identified as 75-year-old Edward Cox of Novato, was arrested and booked into the Marin County Jail on suspicion of felony DUI. It was not immediately known when Cox would appear in court.

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Police are seeking witnesses to the collision and anyone with additional information is asked to contact the department at 415-897-4361.