Soon after, another was arrested on charges of kidnapping, robbery, burglary and possession of a weapon.
Mr. Jefferson pleaded guilty on Dec. 5 to robbery, burglary, stalking, criminal contempt and animal cruelty.
Rape, robbery, burglary, grand larceny and car theft are also on the decline.
Those arrested are expected to face charges including drug trafficking, robbery, burglary, arms possession and handling stolen goods.
The Kimeses were found guilty of murder, robbery, burglary, conspiracy, grand larceny, illegal weapons possession, forgery and eavesdropping.
The teenager, Duane Brown, 18, was charged with murder, robbery, burglary and criminal possession of a weapon, the police said.
Felony assaults, auto theft, robbery, burglary and grand larceny have all gone down since Mr. Kelly took over.
All three were charged with rape, sodomy, robbery, burglary, criminal possession of a weapon and criminal possession of stolen property.
Mitchell is awaiting a preliminary hearing this week on charges of robbery, burglary and possession of a handgun.
For years, police officials in New York have disclosed statistics in major crimes — murder, rape, robbery, burglary, serious assault and theft.
