Published: Apr 26, 2011 4:44 PM EDT
Updated: Apr 26, 2011 1:44 PM EDT

DENVER (AP) - Law-enforcement officials say a man suspected of leaving a pipe bomb and propane tanks at a Denver-area shopping mall has been arrested.

Two law enforcement officials close to the investigation told The Associated Press that 65-year-old Earl Albert Moore was captured Tuesday in Boulder.

The officials spoke on condition of anonymity because the arrest hasn't been officially announced.

Authorities have been searching for Moore since the explosives were discovered April 20 at the Southwest Plaza Mall in the south Denver suburbs.

The explosives were found after a fire, but they didn't detonate. No injuries were reported.

The fire occurred on the 12th anniversary of the shootings at Columbine High School not far from the mall. The FBI says it's unlikely the mall incident was related to Columbine.

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