At least six people have been killed and 26 others injured after gun violence has swept across Chicago over the past 48 hours.

The identified victims of the shootings ranged in age from 13 to 64.

Early Friday morning, a 41-year-old man was fatally shot during an armed robbery and was found inside a vehicle in an alley on Chicago’s Lower West Side.

Later that day, a 16-year-old male was discovered on the sidewalk around the 1200 block of W. 81st Street with gunshot wounds to the chest. After being transported to a local hospital, he was pronounced dead.

A 13-year-old boy was riding a bicycle Saturday when a car went by and an occupant shot at him, leaving him with a gunshot wound to the knee. He was taken to a local hospital in good condition.

A group of people were standing on the sidewalk early Sunday morning when an unknown assailant fired from the street’s west alley, wounding three people: two women and one man.

Officers discovered a 29-year-old man with a gunshot wound to the head in an overturned vehicle near the 3000 block of W. 21st Street Sunday morning. He was transported to a hospital in critical condition and later pronounced dead.

In recent months, the city has also reported gun violence on the weekends.

About him July 4th weekendthere was a mass shooting at a parade in a Chicago suburb that killed six people and injured 47 others. That same weekend, nine people were killed in unrelated shootings and at least 57 people were injured.