From the Prince William police press release:

Armed Robbery – On March 15 at 11:15AM, officers responded to the 2900 block of Williamsburg Ct in Woodbridge (22191) to investigate a robbery.  The victim, a 68-year-old woman, reported to police that she was walking in the area of Georgetown Rd and Getty Ct when she was approached by an unknown male. During the encounter, the suspect implied that he had a firearm then took the victim’s purse. The suspect then fled the area on foot. No injuries were reported. A police K-9 responded to search for the suspect who was not located. The investigation continues.   

From the Prince William police press release:

Threats on School Grounds – On March 15 and 16, a School Resource Officer (SRO) investigated two unrelated threats of potential violence at Fred Lynn Middle School located at 1650 Prince William Pkwy in Woodbridge (22191). The first threat was reported by a student regarding a female student who made statements of potential violence to other students at the school. The second incident involved a separate male student who allegedly made statements of potential violence at the school approximately a week ago. The SRO subsequently identified both students and determined that the risk to the school was not credible. Following the investigation, the SRO charged both students. Both cases will be handled through Juvenile Intake.

From the Prince William police press release: