Legal Definitions - LEIN

LEIN stands for the Law Enforcement Information Network.

The Law Enforcement Information Network (LEIN) is a sophisticated, computerized system used by law enforcement agencies, primarily at the state level, to access and share critical information rapidly. This network serves as a central database for various types of data, including criminal histories, outstanding warrants, stolen property records (vehicles, firearms, etc.), driver's license statuses, vehicle registrations, and personal protection orders. Its primary purpose is to provide officers with real-time, accurate information to enhance public safety, aid in investigations, and ensure efficient law enforcement operations.

• Example 1: Routine Traffic Stop

  Imagine a police officer pulls over a driver for a minor traffic infraction, such as a broken taillight. Before approaching the vehicle, the officer inputs the vehicle's license plate number and the driver's license information into their patrol car's computer, which is connected to LEIN. Within seconds, the system provides details about whether the vehicle is stolen, if the driver has any outstanding warrants, if their license is suspended, or if there are any active protection orders against them. This allows the officer to assess potential risks and proceed safely and appropriately.

• Example 2: Investigating a Burglary

  During the investigation of a residential burglary, detectives find a unique, unregistered firearm left behind by the perpetrator. They run the firearm's serial number through LEIN. The system quickly reveals that the firearm was reported stolen in a neighboring county a few months prior and provides information about the original owner. This information helps the detectives trace the weapon's history, potentially link it to other crimes, and develop leads on the suspect.

• Example 3: Responding to a Domestic Disturbance

  Police officers are dispatched to a home following a report of a loud domestic dispute. As they drive to the location, they use LEIN to check the names of the residents associated with that address. The system alerts them that one of the individuals involved has a history of violent offenses and an active personal protection order (PPO) against them, issued by a court. This crucial information prepares the officers for a potentially volatile situation, allowing them to approach with increased caution and take appropriate steps to enforce the PPO and ensure everyone's safety.