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Posted: 1:59 PM- SAN ANTONIO -- Texas child welfare officials say that more than half the teenage girls swept into state custody from a polygamist sect's ranch have been pregnant.

Child Protective Services spokesman Darrell Azar says 53 girls between the ages of 14 and 17 were living on the ranch in Eldorado. Of that group, 31 already have children or are pregnant.

State officials took custody of all 463 children at the Yearning For Zion Ranch more than three weeks ago after a raid prompted by calls to a domestic violence hotline.

CPS says there was a pattern of underage girls forced into so-called "spiritual marriages" with much older men at the ranch.