CHICAGO -- Four people have been shot and killed in Chicago since Thursday, and at least five others were wounded by gun violence.
It comes as Chicago police step-up patrols, working mandatory overtime for the holiday weekend.
Last year, 14 people were killed and more than 80 people were injured in shootings in Chicago over the Fourth of July weekend.
One of those killed this weekend was a 17-year-old boy who was shot in a South Side park named after slain teen Hadiya Pendleton.
Vonzell Banks was shot in the back Friday afternoon, while playing basketball at the park in the 4300 block of South King Drive.
Banks' 19-year-old cousin was shot in the foot.
Witnesses say they heard several gunshots, then saw the gunman jump into a white SUV which sped way.
Banks, who was going into his senior year at Dunbar Vocational High School, was supposed to start a Summer job on Monday.
No arrests have been made in connection with his death.
Hadiya Pendleton was a King College Prep student who was killed in 2013 while with friends at a park near President Obama's home in Kenwood.