During the past week, every evening, at approximately 7:00 p.m., a person on a bicycle has ridden up to a pedestrian, pointed a knife at the individual, demanded their money and their wallet, and then has ridden away. In each case, the suspect has tossed the wallet on the sidewalk not far from the scene, several times in sight of the victim. The suspect wore gloves in each case. The robberies have occurred in different parts of town and do not display a consistent pattern as to location at this point. The suspect is describes as a male, wearing a bike helmet, glasses, bike pants, and bike shoes that snap into the peddles of the bike. He is of small build and slight stature and appears to be between 20 and 30 years of age.
What criminal investigation actions should be taken?What considerations should be noted for the perpetrator and the victims?Is this case solvable? Should it be pursued? Why or why not?