SECURITY ALERT OFF CAMPUS -- Homewood East 30th Street: Three black males armed with handguns approached a group of six students walking east in the unit block of East 30th Street Wednesday, July 13, at 12:30 a.m. The assailants pointed their weapons at the students, pushed two of the victims to the ground and demanded money. Cash and personal property were taken. The assailants then ran east on 30th Street across St. Paul Street. All three assailants were armed with handguns and wore bandannas over their faces. 29th and Charles Streets: On Monday, July 11, a black male sitting on a bench in the city park near the statue exposed himself to a university employee. The victim yelled, and the suspect walked west into the park. The perpetrator is described as a black male in his late 20s, 5 feet, 11 inches, 150 pounds with short black hair, medium complexion and clean shaven. He was last seen wearing a white jersey with three-quarter length sleeves, black sweat shorts, white socks, black athletic shoes, brown sunglasses and a black Orioles cap turned backwards. Officers believe he is the same man who exposed himself at that location May 25. 3800 San Martin Drive: A white male, 33 to 35 years old, between 6 feet and 6 feet, 3 inches, weighing between 190 and 220 pounds, was seen indecently exposing himself in the wooded area of San Martin Drive. He was last seen wearing a gray T-shirt and reddish print short pants.