A US air base in Italy was closed for several hours due to an unspecified incident, the Associated Press reports.
No injuries were reported.
The Sigonella base was closed "due to an ongoing situation."
According to preliminary information, the unspecified incident occurred at the entrance to the base. Employees were urged to "avoid traveling on the SP105 highway between the Marinai residential complex and part of the base."
Initial reports did not specify what happened. A few hours later, a new post announced the end of the alert at around 11:25 a.m. local time and traffic had resumed.
"We are grateful to our naval personnel for their quick response," the statement added.
The base's spokesman, U.S. Navy Lieutenant Andrea Perez, said that "there were no injuries" in the incident.
An Italian defense official explained that it was a "false alert that triggered all relevant procedures".
The Sigonella base is located outside Catania on the island of Sicily, an Italian air force base.
It is home to the U.S. Navy's P-8 Poseidon reconnaissance aircraft, as well as MQ-4C Triton drones. U.S. Space Force personnel are also based there, working to identify possible missile threats in the region.