(KHNL) -- Hawaii police are looking for two children who were not returned to their adoptive parents following a visit with the children's birth mother.
5-year-old Chelsea Gouveia and 11-year-old Celeste Gouveia were left with 30-year-old Diana Tamura Saturday morning.
The adoptive parents said Tamura failed to return the grils at a pre-arranged time later Saturday morning.
Police officers searched Tamura's home but have been unable to find either the woman or the two children.
Police have issued an all-points bulletin for Tamura and the two girls.
Tamura is also being sought in a custodial interference investigation.