Armed Man Barricaded Inside Arizona Air Force Base

September 16, 2011 Updated Sep 16, 2011 at 11:31 PM EDT

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Armed Man Barricaded Inside Arizona Air Force Base

September 16, 2011 Updated Sep 16, 2011 at 11:31 PM EDT

An Air Force base in Arizona was on lockdown Friday evening after an armed civilian barricaded himself inside a room on the base, according to the Arizona Republic.

Authorities were negotiating with the man as of early Friday evening, according to the report. No shots had been fired.

Read the Arizona Republic story HERE.