A Florida prosecutor says he will seek to vacate as many as 2,600 convictions of people who bought crack cocaine manufactured by the Broward County Sheriff’s Office for sting operations between 1988 and 1990.

The Florida Supreme Court ruled in 1993 that people couldn’t be charged in cases where the sheriff’s office made the crack cocaine and undercover deputies then sold it to buyers who were arrested and charged.

Broward County State Attorney Harold F. Pryor said Friday that while his office was reviewing old records, prosecutors realized that many people may still have criminal charges or convictions on their records because of the sting operation.

“It is never too late to do the right thing,” Pryor said in a statement.

It’s just one example of how the crack cocaine epidemic of the 1980s and early 1990s led to harsh police practices and heavy criminal penalties.

Some people may have been convicted of serious felonies because they bought drugs within 1,000 feet (300 meters) of a school. Conviction under that law required at the time that defendants be sentenced to at least three years in prison.