The Federal Bureau of Investigation’s Denver office announced it cannot confirm the authenticity of an alert about Middle Eastern men harassing family members of military personnel, as reported Wednesday morning in the Colorado media.

On Wednesday, CBS4 Denver and several radio stations reported the FBI Denver Bureau released an alert to law enforcement agencies in Colorado and Wyoming that men described as being of Middle Eastern descent were intimidating military families. The alert specifically named Greeley and Cheyenne, Wyo., as locations where military families had been approached and harassed.

Sgt. Joe Tymkowych, spokesman for the Greeley Police Department, and Sgt. Sean Standridge, spokesman for the Weld County Sheriff’s Office, both said they were unaware of any cases of harassment against military families.

Special Agent Amy Sanders, spokeswoman for the FBI Denver Bureau, said the office did not release any such alert and that it had not confirmed the document’s authenticity as of Wednesday afternoon.

According to CBS4, the alert documents one incident in May in which the wife of a military member was approached in front of her home by two Middle Eastern men. The men said she was the wife of a U.S. interrogator. When she denied their claims the men laughed. The two men left the area in a dark-colored, four-door sedan with two other Middle Eastern males in the vehicle.

The FBI’s alert further stated Middle Eastern men attempted to gain personal information about military members and their families through intimidation. Those family members reported feeling scared, according to CBS4 Denver reports.

Although CBS4 Denver reported it could not confirm the details of the alert with anyone at the FBI Denver Bureau, it stated officials with the Colorado Division of Homeland Security & Emergency Management were aware of military families in Colorado being targeted and harassed by Middle Easterners.

Nathan Hunerwadel, a spokesman for the state division of homeland security, said Wednesday his agency was aware of the FBI bulletin, but that his office did not know the details of any specific cases of harassment in Greeley, Cheyenne or elsewhere. However, Hunerwadel encouraged families of military members to report suspicious activity to the FBI.