SAN ANGELO, Texas (AP) – Adult mothers who have been allowed to stay with their young children since they were taken from a polygamous sect will be separated from them after DNA sampling is completed next week, a child welfare official said Saturday.

Texas District Judge Barbara Walther late Friday ordered that parents and children of the Yearning For Zion Ranch submit DNA samples to help sort out family relationships that have confounded authorities since 416 children were taken into state custody two weeks ago.

Sampling is to begin Monday and will probably take several days to complete, said Darrell Azar, a spokesman for Child Protective Services. Results could take more than a month.

Once sampling is complete, the agency will begin moving the children from the San Angelo coliseum and fairgrounds to other sites.