The National Incident-Based Reporting System
The National Incident-Based Reporting System (NIBRS) supplements the UCR system by pro- viding incident-level data on crimes reported to the police. The NIBRS greatly expands the types of crimes reported by law enforcement officials to the FBI. It asks police agencies to collect information on incidents involving victims younger than 12 as well as victimizations that occur with individuals, households, and businesses.
The NIBRS categorizes crimes into Group A offenses and Group B offenses. Police depart- ments are instructed to collect detailed information on the 22 Group A categories. Only arrest data are collected on the 11 Group B offenses.
Group A Offense Categories
• Arson homicide offenses • Assault offenses • Bribery • Burglary/breaking and entering • Counterfeiting/forgery • Destruction/ vandalism of property • Drug/narcotic offenses • Embezzlement • Extortion/blackmail • Fraud offenses • Gambling offenses • Kidnapping/abduction • Larceny/theft offenses • Motor vehicle theft • Obscene material • Prostitution offenses • Robbery • Sex offenses, forcible • Sex offenses, nonforcible • Stolen property • Weapon law violations
Group B Offense Categories
• Bad checks • Curfew/loitering/vagrancy violations • Disorderly conduct • Driving under the influence • Drunkenness • Family offenses, nonviolent • Liquor law violations • Peeping Tom offenses • Runaways • Trespass of real property • All other offenses