Published: May 18, 2010 10:43 PM EDT

FORT MYERS, Fla. - Authorities are seeking the individual who left a cooler in downtown Fort Myers near the courthouse; the discovery spurred evacuations of the entire neighborhood and the cooler was detonated after a swabbing to detect explosive yielded positive results.

The situation unfolded at 8:52 a.m. Tuesday morning, when the Fort Myers Police Department received a call in reference to a suspicious package outside the U.S. Courthouse and Federal Building located at 2110 First Street.

The package was a cooler located near a car on the Main Street side of the building. An employee with the U.S. Marshals Office swabbed the cooler for explosives and the test yielded a positive result. Police immediately established unified command to investigate the possible threat.

Agencies represented in the incident included the Fort Myers Police Department, Fort Myers Fire Department, Lee County EMS, Lee County Sheriff’s Office, U.S. Marshals Office, Department of Homeland Security and the Southwest Florida Regional Bomb Squad.

Police evacuated the U.S. Courthouse and Federal building along with businesses in the immediate surrounding perimeter. Bomb squad members then used a robot to safely detonate the cooler, at which time they determined the cooler contained nothing hazardous.

Detectives with FMPD are continuing to investigate in an attempt to identify individuals responsible for leaving the cooler downtown.

Anyone with information is asked to call FMPD at 321-7700, Crime Stoppers at 1-800-780-TIPS or text message C-R-I-M-E-S (274637), keyword "FMPD." Tipsters can remain anonymous.

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