Parents kidnap 2 kids from Arizonia Child Protective Services

I'm surprised this doesn't happen more often... by the way, how does this happen during a supervised visit?

Americas Amber Alert Center - Parents kidnap 2 kids from Arizonia Media Alert: "Americas Amber Alert News Center(S.Tucson AZ USA)TAA-- South Tucson police are searching for two children who were kidnapped Thursday from Child Protective Services by their parents. An Amber Alert wasn't issued for the 6-year-old boy and 1-year-old girl because the incident didn't meet the criteria of imminent danger, said Officer Ed Little. Still, the children may be in danger. 'When it's a kidnapping, nobody knows,' he said. 'We all hate to assume.'" Angel Jacobo and Nataly Queira Reyna were taken from a scheduled supervised visit with their parents at the CPS facility at 2750 S. Fourth Ave., Little said. The kidnapping occurred between 11 a.m. and 12:35 p.m.