A Chicago man has been charged with murder in connection with the fatal shootings of four passengers who appeared to be sleeping on a Chicago Transit Authority train Monday morning, police say.

While specific circumstances may differ from one event to another, the most pressing questions are the social roots of these repeated outburst of violence and how to stop them from happening.

Four people fatally shot on a commuter train in the Chicago area early Monday appeared to be attacked while asleep in their seats, police said in an afternoon update.

CHICAGO (CBS) — At least six people were killed, and 24 others were wounded in weekend shootings across Chicago as of Sunday, according to police. The ages of the victims range from 15 to 55. A 15-year-old boy is in serious condition after he was shot outside an indoor track facility near Gately Park in Chicago on Saturday afternoon.

In total, there have been at least 385 shootings this year where where at least four people were killed or injured.

Rhanni S. Davis, 30, faces four counts of first-degree murder in relation to the fatal Labor Day shootings of the four passengers as they slept.

A 30-year-old man charged with killing four people while they slept aboard a Chicago-area transit train was expected in bond court Wednesday. The Labor Day shooting happened before 5:30 a.m. aboard Chicago's L system,

A Chicago Transit Authority employee was the person who discovered the four people fatally shot on two Blue Line train cars early Monday morning, according to a police report. Prosecutors revealed new details on Wednesday about the quadruple fatal shooting on the Blue Line train shortly before 5:30 a.