All three incidents took place Monday in the Brighton Park and Gage Park neighborhoods.
A 30-year-old man was shot in Gage Park at 12:49 a.m. One minute later, another man was shot in South Chicago.
Patrick Alcontin, of Lombard, hid the camera in a restroom at the medical office where he worked.
Shots were fired Monday in the 700 block of George Avenue. No one was injured and nothing was hit by the bullet.
The boy threatened to carry out the shooting at Boone Grove Elementary and Middle School.
All four motorcyclists were injured, one critically.
The 45-year-old was taking out his trash about 12:50 a.m. when two males got out of a blue vehicle and approached him in an alley.