A bomb threat temporarily locked down Luke Air Force Base in Arizona Friday before a bomb squad conducted a search and declared the situation safe again, according to reports.

No injuries and no arrests were reported after the base was placed on high alert for approximately one hour.

The first reports of the bomb threat came around 9 a.m. local time, according to news reports and an official tweet from the base alerting the public to the incident.

In the tweet, LAFB announced that police tactical explosives units were responding to the scene.

During the lockdown, officials stopped all outbound traffic until all the buildings on the base could be searched.

The base later tweeted that the 56th Security Forces Squadron had completed a sweep of the facilities and determined the threat to be over.

The military installation is in Glendale, about 20 miles northwest of downtown Phoenix.

Few other details were immediately available.