Leaders of the Venezuelan street gang Tren de Aragua (TdA) are believed to have given members what authorities are calling the "green light" to attack and kill police officers, federal authorities have warned.

A bulletin by the Colorado Information Analysis Center, a screenshot of which was shared with Fox News Digital, warns that a police department in New Mexico has received information from federal partners that members have been encouraged to attack police officers in Denver.

"The Albuquerque Police Department has released an officer safety bulletin to notify law enforcement of information regarding the Tren De Aragua criminal organization and reports that TdA members in Denver have been given a "green light" to fire on or attack law enforcement," it says.

This image shows a screenshot of a synopsis by the Colorado Information Analysis Center.

The Denver Police Department told Fox News Digital that it was aware of the warning.

TdA is said to specialize in extortion, kidnapping, murder and sex trafficking. Federal authorities have been warning that the gang is trying to establish itself in the U.S., where police are already linking it to organized crime. The FBI has also warned that the gang could team up with the bloodthirsty MS-13.