ELDORADO, Texas—A Texas grand jury Tuesday indicted polygamist sect leader Warren Jeffs and four of his followers on charges of felony sexual assault of a child. Another was indicted for failing to report child abuse.

Attorney General Greg Abbott said the five men are charged with one count of sexually assaulting girls under the age of 17. One of them, but not Jeffs, faces an additional charge of bigamy.

Abbott said a sixth member of the Fundamentalist Church of Jesus Christ of Latter Day Saints is charged with three counts of failure to report child abuse.

Jeffs, already convicted of being accomplice to rape in Utah and awaiting trial in Arizona on other charges related to underage marriages, is accused of assaulting a girl in Texas in January 2005, according to the indictment issued Tuesday.

“Our investigation in this matter is not concluded. This is an ongoing investigation that we intend to continue,” said Abbott, whose office is acting as the special prosecutor in the case.

The grand jury in this tiny western Texas ranching community will continue consideration of other possible criminal charges on Aug. 21, according to a source who spoke on the condition of anonymity because proceedings of the panel are secret by law.

The identities of the Jeffs’ followers who were indicted in addition to him were not released Tuesday because the indictments remain sealed until authorities can arrest the men.

“There will be an aggressive effort to apprehend them,” Abbott said when asked whether he was concerned the men may have fled Texas.

FLDS members have historically lived around the Arizona-Utah line and bought the Yearning For Zion Ranch in Eldorado about five years ago.

Calls to spokesmen for the church were not immediately returned Tuesday.

The indictments follow an ill-fated child custody case in which more than 400 children were placed in foster care. The Texas Supreme Court ruled child welfare authorities overstepped in taking all the children from their parents even though many were infants and toddlers and the state failed to show any more than handful of teenage girls were abused or at risk.

The criminal charges came during the panel’s second meeting on the case; it met in June without taking any action.

Abbott spent Tuesday in the small community building where the grand jury was meeting near the courthouse. Women and girls in prairie dresses, including a 16-year-old daughter of Jeffs, were escorted in and out, while lawyers and FLDS members crowded a bench in front of the courthouse.

Grand jury proceedings are supposed to be secret, but documents released as part of the separate child custody case involving the FLDS children have revealed some of the evidence collected by law enforcement during the weeklong raid that began April 3.