Both clubs were closed in August 1996 because of what the police said had been drug activity there.
And the effect on the overall level of drug activity turned out to be marginal.
"Much of the recent violence is tied to drug activity," the Mayor said at an afternoon news conference.
The police said there was drug activity at the scene as well.
The area also had high levels of illegal drug activity and violent crime.
Police officials called the neighborhood one of heavy drug activity.
Many crimes being committed throughout the city stem from drug activity.
The officers were using nuisance laws to attack drug activity in the building.
Several residents of the neighborhood said the building was known as a location for drug activity.
"I've spent more than $300,000 in building this store, and I simply wouldn't have done it to open a business surrounded by drug activities."