The testimony came late Thursday, the first day of a court hearing to determine whether the children, swept up in a raid on the ranch two weeks ago, will remain in state custody. Child welfare officials claim the children were abused or in imminent danger of abuse because the sect encourages girls younger than 18 to marry and have children.
Child welfare investigator Angie Voss testified that at least five girls who are younger than 18 are pregnant or have children. Voss said some of the women identified as adults with children may be juveniles, or may have had children when they were younger than 18.
Identifying children and parents has been difficult because members of the Fundamentalist Church of Jesus Christ of Latter Day Saints have given different names and ages at various times, Voss said. The state has asked that DNA be taken from all of the children and their alleged parents to help determine biological connections. The judge has not ruled on that request.
One of the issues is whether authorities overstepped their bounds, reports CBS News correspondent Hari Sreenivasan. In a household where abuse is suspected, Texas law allows every child to be removed, so defining "household" could become pivotal.
In a possibly related development, police in Colorado Springs, Colo., have made an arrest of a 33-year-old woman and charged her with false reporting to authorities, reports Sreenivasan. At the moment, it is in an unrelated case, but the arrest did happen a day after Texas rangers were investigating what happened in San Angelo.
The court hearing, which continues Friday morning, disintegrated into farce early Thursday, as hundreds of lawyers who descended on San Angelo for the proceedings shouted objections or queued up to cross-examine witnesses. The judge struggled to maintain order.
"I've tried to impose some structure to this free-for-all," said Texas District Judge Barbara Walther.
The case - one of the biggest, most convoluted child-custody hearings in U.S. history - presented an extraordinary spectacle: big-city lawyers in suits and mothers in 19th-century, pioneer-style dresses, all packed into a historic courtroom and an auditorium two blocks away that was patched into the proceedings by a grainy video feed.
The state wants to keep the children in its custody, and likely move them to foster homes while officials continue investigating abuse allegations. The state must provide evidence the children were physically or sexually abused, or are in imminent danger of abuse.
In 11 hours on Thursday, only three witnesses testified, including Voss.
As lawyers shouted, dozens of mothers sat quietly in their long cotton dresses and braided upswept hair. They were sworn in as possible witnesses at the hearing's outset, but it was not clear when they might testify.
In the satellite courtroom at City Hall, hundreds of people strained to see and hear a large projector set up on the auditorium's stage. But the feed was blurry and barely audible.
"I'm not in a position to advocate for anything," complained Susan Hays, the appointed attorney for a 2-year-old sect member.
No decisions were made on the fate of any of the youngsters, and more cross-examination of Voss was likely Friday.
The children, most of whom are being kept in a domed coliseum in San Angelo, range in age from 6 months to 17 years. About 130 are under 4 years old, Voss said.
She said she was concerned about how the children and women followed the orders of the church's prophet, identified as jailed leader Warren Jeffs.
"The children reported that if the prophet heard from the Heavenly Father that they were to marry at any age, they were to do that. If the prophet said they were to lie, they were to do that," Voss said.
Jeffs is currently awaiting trial in a Kingman, Ariz., jail on charges related to the promotion of underage marriages. He previously was convicted of being an accomplice to the rape of a 14-year-old wed to her cousin in a Utah case.
The sect came to West Texas in 2003, relocating some members from the church's traditional home along the Utah-Arizona state line. Voss said the ranch was considered a special place, the sect's Zion.
Authorities raided the 1,700-acre ranch south of here in Eldorado on April 3 and began removing children while seeking evidence of underage girls being married to adults. Walther signed an emergency order giving the state custody of the children taken from the ranch.
The raid was prompted by a call from someone identifying herself as a 16-year-old girl with the sect. She claimed her husband, a 50-year-old member of the sect, beat and raped her.
The girl has yet to be identified, though Voss said a girl matching her description was seen by other girls in the ranch garden four days before the raid began.