Two false active shooter reports within 24 hours sent shoppers fleeing from area shopping centers in Wilmington this week, prompting increased police patrols during the holiday season.

Officials with Luke Air Force Base say personnel on base have been directed to shelter in place until further notice.

Authorities found no evidence of an active shooter at Luke Air Force Base after a lockdown Friday at the West Valley military installment.

The all-clear has been given after reports of a possible active shooter on Luke Air Force Base on Friday morning.

GLENDALE, Ariz. - The lockdown at Luke Air Force Base has been lifted following reports of an active shooter incident. Luke Air Force Base says a lockdown was initiated just before 10:30 a.m. on Dec. 19 "in response to a report of a potential active shooter incident occurring on the installation."

"We try to be proactive, to get in front of these types of incidents, but again, this is just the world we live in and the level of preparedness that we all need to have."