Security personnel at the Little Rock Air Force on Wednesday, July 23. (Danny Johnston/AP)

The Little Rock Air Force Base was locked down for several hours Wednesday due to a report of a suspicious individual, officials said.

Officials locked the base down at about 11:45 a.m. local time after the report. The base’s gates were closed and people on the base were told to stay indoors during the lockdown, which was lifted shortly after 4 p.m.

“After a thorough search of the base, we the found the report no longer credible,” Col. Patrick Rhatigan, 19th Airlift Wing commander, said in a statement.

An accident response exercise at the base was scheduled for Wednesday, but it is not known if the exercise was already underway when the lockdown began.

The base is located near Jacksonville, Ark., just north of Little Rock.

This post has been updated. Last update: 5:43 p.m.