A 19-year-old Chicago man, Sergio Chaves, was charged in U.S. District Court today with one felony count of possession of an unregistered destructive device.
Police say Chaves, who they believe acted alone, was responsible for planting the bomb outside the rear of the Evanston Police Outpost at 633 Howard St. Saturday night.
The device was spotted by police in a trash can after they received a tip and was disabled by the Cook County Sheriff's Department bomb squad.
A joint investigation by Evanston Police and the federal Bureau of Alcohol, Tobacco, Firearms & Explosives led to the arrest of Chaves.
A spokesman for the ATF says Chaves had hoped to receive a reward for tipping off police to the existence of the device, which he described as crude but potentially deadly.