100 from any MIT phone
It is MIT's policy to protect the rights of all individuals and to safeguard the welfare of everyone in the MIT community. All members of the MIT community are expected to conduct themselves with proper respect for one another and for each other's property.
At times, people return to their office or lab and find a stranger inside. The stranger usually has a "cover" story, such as looking for employment or trying to find some person. Regardless of the story provided, take close notice of the intruder's appearance (age, height, weight, clothing, etc.) and notify the MIT Police as soon as it safe to do so.
DO NOT FORCEFULLY CONFRONT INTRUDERS or PURSUE THEM when they flee. Such action involves a high degree of risk, and has in the past resulted in assaults upon the victim of the crime. It is more helpful to be able to provide a good description of an intruder and their direction of flight.