The boy was found safe in Oceanside on Monday, and his mother was taken into custody, according to the TV station's report.
Long Beach police say the boy was abducted by his mother, identified as 49-year-old Sri Johnston, last Thursday.
Nicholas was described as a 12-year-old white male, 4' 8" tall and 80 pounds with blond hair and blue eyes. The suspect, Sri Johnston, was described as a 49-year-old white female, 5' 1" tall and 125 pounds with brown hair and brown eyes.
Sri Johnston was possibly driving a tan 1998 Saturn 4-door sedan with California license plate number 4AUU679.
Anyone with information about this case is asked to contact the Long Beach Police Department at (562) 570-9650.