In recent years, however, the term “flash mob” has acquired a new meaning. Philadelphia’s non-violent high-school and college-aged residents need to reclaim the flash mob.

A woman unaffiliated with the University was robbed at about 8:50 a.m. in the second-story bathroom of the Evans Building, part of the Penn Dental School.

Cambridge University criminology professor Lawrence Sherman argues that if we had defined the 9/11 attacks as a crime, the world would be very different today.

Philadelphia Mayor Michael Nutter and Police Commissioner Charles Ramsey unveiled a five-year crime plan for the city of Philadelphia — including the introduction of horseback police — at the end of last month.

A female Penn student reported that an unknown male grabbed her and “touched her in an inappropriate manner” last night at about 12:45 a.m. nearby Gregory College House, according to the Division of Public Safety.

An interactive map of crime around campus last week.

Sixteen parties were shut down this year during New Student Orientation, including 11 off campus and five on campus.

In addition, alcohol-related incidents fell about 32 percent compared to last year.

Police restrained a woman before she could jump from the garage’s 10th floor roof Sunday night.

The University of Sciences in Philadelphia issued three alerts to its students between 10:30 p.m. and 1:30 a.m. Monday night regarding an armed assault and a possible armed robbery.

A two-day-old boy is on his way back to the Hospital of the University of Pennsylvania after being taken by his mother around noon Thursday, and the Amber Child Abduction Alert has been lifted.

A newly-enforced curfew in Philadelphia led to the apprehension of dozens of juveniles this past weekend.

A Penn student riding a bike was the victim of a hit-and-run accident near campus that sent him to the hospital on Monday afternoon.

A female Penn undergraduate has been brought back to safety after threatening to jump from the roof of the Fresh Grocer parking garage. Penn Police, the Philadelphia Police and Fire Departments and University and city counselors negotiated with her for about two hours until she eventually climbed back down at about 5:20 p.m.