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HELENA-WEST HELENA, Ark. -- Police in Helena-West Helena are looking for a third suspect in the rape of a teenage girl.

John Zeigler is wanted by police.

Police told our Luke Jones they have reason to believe he may have fathered one of her three children.

Police say he was previously arrested for endangering the welfare of a child in a different case.

His last known address was in Phillips County.

He is the brother of Joe Zigler who was charged with rape Thursday.

Police say though the two are related, their last names are spelled differently.

The 15-year-old girl's mother was arrested in July after police said she knew her daughter was being raped by 44-year-old William Watson.

DNA tests have now confirmed another man, 44-year-old William Watson, fathered the 15-year-old’s second child.

Authorities said the mother was sexually involved with Watson.

The mother denied knowing how her daughter got pregnant and who the father was.

The investigation began back in January 2016 when an anonymous tip was received by the police department stating child abuse was happening inside the Helena-West Helena home.

In February, Watson was interviewed by police but denied having any type of involvement with the teen.

Several weeks later, investigators discovered the child was 7-months pregnant with her third child.

DHS and investigators removed the child, her two children, and two other sisters from the home.

Police say the teen told them her mother was physically abusive toward her and knew she had been raped.

The girl was also not allowed to go to school.

Watson was arrested on July 24 and is charged with rape.

The mother was arrested on July 26 and charged with three counts of permitting abuse to a minor, endangering the welfare of an incompetent person and contributing to the delinquency of a minor.

Her bond was set at $101,000.

Police Chief Virgil Green said, “This young child isn’t old enough to drive a car get a driver license, but she has three children. Too many people knew what was going on with this family but failed to come forward and report it, those individuals let this young lady down.”

Green said had it not been for the anonymous tip, no arrests would have been made.

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