THE BRONX - Officials have closed the books on a heroin trafficking ring first busted back in 2010. 

According to authorities, all 38 members of the organization "La Perla" have now been convicted after its three leaders pleaded guilty Wednesday. 

Investigators say the group trafficked heroin at three different locations in the Bronx, generating hundreds of thousands of dollars a week. More than $1.5 million in cash was recovered during the initial bust, along with four grams of the drug. 

The three leaders are expected to be sentenced in September, and could get 12 years behind bars.