US missions in Iraq warned American citizens Friday to remain vigilant amid escalating regional tensions, saying Iran and allied groups could target US interests and facilities worldwide, Anadolu reports.

“The security situation remains complex with the potential for unexpected escalation,” the US Embassy in Baghdad and Consulate General in Erbil, northern Iraq, said in a joint security alert.

The missions advised US citizens in Iraq to maintain a high level of readiness, monitor local media, and follow instructions from Iraqi authorities. They warned that travel disruptions and airspace closures could happen without notice.

Americans elsewhere were advised to reconsider travel to or through the Middle East, while those already in the region were urged to prepare for flight cancellations, repeated airspace closures, and other disruptions.

“U.S. diplomatic facilities, including those located outside the Middle East, have been targeted,” the alert said. “Iran and its supporting groups may target other U.S. interests abroad or sites associated with the United States and American citizens around the world.”