Busy neighborhoods seeing more crime About an hour after midnight, just west of Dupont Circle one day this week, four people roughed up someone on the street and took a wallet and cash, D.C. police said. About two hours later,a second potential victim was accosted, police said. This time, the victim fled and called for help. Police said they arrested a woman and three teenagers, two male, one female. The four were charged in both incidents, the first at 1:14 a.m. Tuesday in the 2000 block of Massachusetts Avenue, the second about 3: 10 a.m. in the 1200 block of 22nd Street NW. The incidents were among the latest in parts of the city where such events have been relatively uncommon over the years. Often in busy neighborhoods, robbers who appear unarmed grab property and run. But robberies have occurred throughout the city, some involving weapons. Last Saturday, a robber on a bicycle demanded property from someone in the 4500 block of Quarles Streeet NE, in the Deanwood area, police said. The victim refused, tried to flee, and was shot, police said. Police made an arrest on a charge of assault with intent to rob.