FBI Director Christopher Wray warned that a “wide array” of dangerous threats is headed for the United States through the border. During a Senate Intelligence Committee hearing on Monday, Wray revealed that the threats include violent gangs and smugglers with ties to ISIS, as well as drug trafficking.

When asked by Sen. Marco Rubio (R-FL) about the gang threats at the border, Wray declined naming a specific gang. However, he said that dangerous individuals are entering the country through the southern border.

“From an FBI perspective, we are seeing a wide array of very dangerous threats that emanate from the border. And that includes everything from drug trafficking — the FBI alone seized enough fentanyl in the last two years to kill 270 million people — that’s just on the fentanyl side,” he stated, adding, “An awful lot of the violent crime in the United States is at the hands of gangs who are themselves involved in the distribution of that fentanyl.”

Wray was asked about the possibility of smuggling networks having ties to ISIS or other terrorist organizations. In response, he said, “So, I want to be a little bit careful how far I can go in open session, but there is a particular network that, where some of the overseas facilitators of the smuggling network have ISIS ties that we’re very concerned about and that we’ve been spending enormous amount of effort with our partners investigating. Exactly what that network is up to is something that’s, again, the subject of our current investigation.”

When Rubio asked him to confirm whether a smuggling network that is a subject of concern to authorities has facilitators with ties to ISIS, he replied, “Correct.”

The hearing comes as officials have warned about the increasing presence of gangs in the U.S., including the bloodthirsty Venezuelan prison gang Tren De Aragua. Per Fox News, a Customs and Border Protection internal bulletin asking border agents to be on the lookout for people crossing the border in order to detect members of the notorious gang.

As reported by Fox News last week, federal authorities warned that the gang is trying to set grounds in the U.S., adding that police have been linking it to organized crime in the country already.

The brother of the suspect in the murder of Georgia nursing student Laken Riley has ties to the gang, according to authorities. Both the suspect and his brother entered the U.S. illegally.