San Antonio:
A lockdown was ordered at a US Army base in San Antonio, Texas, on Sunday evening in what a military spokesman described as a "high security incident" while adding that there was "no threat."
One person was under arrest at Fort Sam Houston and a "suspicious vehicle" was found in the middle of the post, spokesman Alex Delgado said.
He did not know what prompted officials to view the vehicle as suspicious. He said there were no injuries.
Traffic was blocked from entering the base, which is located within the city, and cars were backing up on main roads entering the post.
Fort Sam Houston is the home of the US military's medical operations and the center of its operation to curb the spread of Ebola in West Africa. Two special teams have been trained at the base to be deployed to hospitals fighting the viral disease.
© Thomson Reuters 2014