June 23 (UPI) -- The Department of Homeland Security is warning of a "heightened threat environment" across the United States in response to its attack on Iran over the weekend.

Homeland Security Secretary Kristi Noem issued the National Terrorism Advisory System Bulletin on Sunday, warning of the increased threat of terrorism while stating "there are currently no specific credible threats against the homeland."

"It is our duty to keep the nation safe and informed, especially during times of conflict," Noem said in a statement.

"The ongoing Israel-Iran conflict brings the possibility of increased threat to the homeland in the form of possibly cyberattacks, acts of violence and anti-Semitic hate crimes."

Related