5,082 women and girls were subjected in Texas to the same “stalking” tactics used by a “lone wolf” gang, authorities said Friday.
The FBI said it has launched a criminal investigation into the allegations and has also launched a task force.
Authorities are trying to identify the men and women who perpetrated the attacks.
In a statement, the FBI said the attacks occurred in four different cities in Texas and that one of the men had been arrested in Austin.
Texas Attorney General Ken Paxton said the “stalkings” occurred in different areas of the state.
A federal official told The Associated Press that investigators believe there are likely dozens of victims.
The official spoke on condition of anonymity because the investigation is ongoing.
In Texas, law enforcement officers can be fired for stalking a person, though some officers are barred from doing so under state law.
Some state legislators want to expand the state’s stalking laws to include sexual harassment.
Texas has the highest rate of sexual harassment in the country, according to a recent report by the American Civil Liberties Union of Texas.
The Austin Police Department is investigating the claims of sexual assault, harassment and stalking, a spokesman said.
A spokesperson for the Department of Justice’s Civil Rights Division said the department was looking into the matter.
The federal government has taken a hands-off approach to combating hate crimes since President Donald Trump took office.