Thirteen people have been shot at a park on Chicago's southwest side, including a 3-year-old boy who was in critical condition, authorities said. (Sept. 20)

At least 23 people were shot, including three fatally, in attacks in Chicago early this morning and Thursday night, authorities said.

During a single shooting Thursday night about 10:15 p.m. in the Back of the Yards neighborhood, 13 people, including a 3-year-old boy, were shot at Cornell Square Park, authorities said.

Killed in shootings include a 29-year-old woman who was shot at 79th and Wood streets and who was pronounced dead at 4:18 a.m. at Advocate Christ Medical Center in Oak Lawn, according to the Cook County medical examiner's office. The woman's name was not being released immediately, according to the medical examiner's office.

About 11:55 p.m., the woman was standing outside in a group when shots were fired from a silver vehicle and she was hit in the abdomen and chest, according to police News Affairs Officer Michael Sullivan.

No arrests have been made in the slaying, Sullivan said.

Chicago Fire Department spokesman Will Knight said paramedics responded at 11:54 p.m. Thursday to that scene.

In another fatal shooting, a 36-year-old man identified by the medical examiner’s office as Johnny Tinsey, was shot near 77th Street and Sangamon Avenue about 6:56 p.m. Thursday, said Chicago Police News Affairs Officer Daniel O'Brien.

Tinsey, of the 7700 block of South Sangamon Street, was pronounced dead at 7:37 p.m. Thursday at John H. Stroger Jr. Hospital, according to the medical examiner’s office.

Early Friday, about 12:45 a.m. in the 3600 block of West Augusta Boulevard, a man was shot in the chest, police said. The victim, Rubin Austin, 25, of the 1100 block of North Ridgeway Avenue, was pronounced dead at 1:38 a.m. at John H. Stroger Jr. Hospital of Cook County, according to the medical examiner's office.

In others shootings, seven people were wounded.

In the first, a teenage boy was shot in the foot in the 700 block of West 72nd Street in the Englewood neighborhood about 6:35 p.m., said O’Brien. The victim, who told police he had heard shots, then felt pain, but otherwise gave little information about the shooting, was in good condition at Advocate Christ Medical Center in Oak Lawn.

About 7:52 p.m. in the 3800 block of West 57th Place in the West Elsdon neighborhood, two men in their 20s were shot, O’Brien said. One was shot in the stomach, and the other suffered a graze wound to the thigh, and both had had their conditions stabilized at Christ Medical Center.

About 7 p.m., a 28-year-old man was shot in the stomach in the 6100 block of South Normal Boulevard, according to police. The shooting originally had been reported as happening a few blocks away, on Aberdeen Street.

About 10:30 p.m. Thursday, a 21-year-old man was shot in both legs in the 5500 block of West North Avenue in the Austin neighborhood. The victim was taken to Advocate Illinois Masonic Medical Center, police said An attacker came up to the man and shot him, then fled north on Luna Avenue, said Chicago Police News Affairs Officer Ronald Gaines.

About 2 a.m. Friday a 23-year-od man was shot in the side at 75th Street and Michigan Avenue and taken in critical condition to Advocate Christ Medical Center in Oak Lawn, police said.

Also about 2 a.m. but in the 6300 block of South Eberhart Avenue, a male was shot in the leg, according to police, who had no further details on this shooting.

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