**UPDATE** The envelope has been deemed not explosive or hazardous by authorities, but the investigation is ongoing. The building has been reopened.
Police say there is no evidence yet connecting this to the suspicious incident at Southgate Mall earlier Tuesday.
SARASOTA, Fla. - A building in downtown Sarasota is on lockdown after workers received what police call a "suspicious envelope".
According to Sarasota Police, lobby workers at the Plaza Five Points building, located at 50 Central Avenue, received an envelope around 2pm Tuesday.
Written on the envelope were the words "TNT" and "kaboom", with a pumpkin on it.
The envelope was not addressed to any particular person, just simply to "Plaza Five Points".
Police say everybody is safe inside the building, but nobody is being let in or out for the time being.
Authorities on the scene are awaiting the arrival of the FBI.
This is the 2nd suspicious incident in Sarasota on Tuesday. Earlier in the day, an unknown person walked into a store in Westfield Southgate Mall and threw an unknown white powder substance, causing the mall to get shut down. The substance is not believed to be hazardous.