On Thursday, the California Highway Patrol issued an Amber Alert on behalf of the Los Angeles County Sheriff's Department for two children last seen in Santa Clarita. What we know:Officials with the California Highway Patrol said the two children were last seen around 1:30 p.m. on Wednesday, Jan. 28 near River Circle and Soledad Canyon Road. Sofia is described as being 4 feet tall, weighing 70 pounds, with brown hair and brown eyes. Romeo is listed at 5-feet-7-inches tall, weighing 190 pounds with brown hair and brown eyes. (California Highway Patrol)The suspect's vehicle is a 2018 black Kia Sorento with California license plate number 8BLRF237.