At least 13 people have been shot in Chicago at the start of the long holiday weekend, including a woman killed as she sat on a porch near Garfield Park and a man slain in front of a hair salon on the South Side, police said.

Shambreyh R. Barfield, 21, was sitting with a friend at a two-flat in the 3800 block of West Monroe Street Thursday afternoon when four or five masked men drove past in a blue sedan and fired, apparently aiming for someone else, police said.

Barfield was hit in the head and the friend, a 21-year-old woman, was shot in the left arm.  Barfield, of the 6000 block of South Winchester Avenue, was taken to Mount Sinai Hospital, where she was pronounced dead.  Her friend was taken to Stroger Hospital, where her condition was stabilized.

A teen at the scene, whose mother did not want him identified, said he saw a woman slumped over on the porch after he heard what sounded like fireworks. "I think it was like 10 or 8 shots," he said. "They told me, 'Run!' So we ran."

The mother of the boy, Andrea Byes, said she is planning to move out of the two-flat where she lives with her children because of the violence, drug sales and loitering on the block.

"I'm not surprised something like this happened," said Byes, 40. "It was a matter of time. They're all over everywhere. . .These people are used to it. It's like an everyday normal thing, and it's sad that these children have to grow up thinking it's an everyday normal thing."

Another shooting overnight left one dead and one wounded in West Englewood. The two were hit when someone fired from inside or near a black car about 2:40 a.m. Friday in a stripmall at 63rd Street and Damen Avenue.

Corey Hudson, 34, was killed and a 35-year-old man was wounded in front of a salon where children were getting their hair done overnight. Shell casings littered the sidewalk and bullets had pierced a nearby gyros restaurant.

A man who pulled up to the scene after the shooting, but before police arrived, said saw two men on the ground, one of them still moving.

A woman whose 4-year-old daughter was inside the salon became separated from her child until after police arrived. She stood outside the crime scene until a supervisor was able to walk her into the salon, where she was told she’d have to wait until detectives and evidence technicians finished their investigation.

The strip mall is covered by at least six security cameras, though it wasn't clear which ones worked.

Hudson was pronounced dead at Holy Cross Hospital. He lived in the 6500 block of South Bell Avenue in the same neighborhood. The second man remained in critical condition at Stroger.

In other shootings:

• A 21-year-old man walked into Mercy Hospital and Medical Center about 5:20 a.m. and told police he had been shot near the corner of 47th and Ada streets in the Back of the Yards neighborhood. It was not clear if police found a crime scene there. He had a thigh wound and was expected to survive.
• Around the same time about a mile away, an 18-year-old man was shot in the thigh and brought to the University of Illinois Medical Center by his relatives, according to Police News Affairs Officer Janel Sedevic.  He was transferred to Stroger Hospital, where he was treated and released.

The man told police he had been shot in the 4300 block of South Wood Street around 5:20 a.m. No one was in custody.
• An 18-year-old woman was shot about 3:45 a.m. in the Little Village neighborhood. She was shot in the buttocks and was in good condition at Mount Sinai Hospital, police said. It was not clear what prompted the shooting. Police kept watch over a trail of five shell casings on Homan Avenue just south of 24th Street.

• A man was shot about 2:30 a.m. in the 3500 block of West Lake Street in the East Garfield Park neighborhood. He was treated at a hospital for a calf wound and released. Details of the shooting were not available.

• A 56-year-old man was shot in the 7400 block of South Winchester Avenue about 12:20 a.m. and took a bus to 67th Street and Cottage Grove Avenue. The man told police he was shot on Winchester but it was not clear if police located a scene there.

He was taken from Cottage Grove Avenue to the University of Chicago Hospital, but police said he wasn’t able to cooperate because he was intoxicated.

• A 21-year-old man was grazed in the face and shot in the arm and stomach about 9:45 p.m. Thursday in the 600 block of North Ridgeway Avenue in the East Garfield Park neighborhood. Police said he was taken to Mount Sinai Hospital in critical condition and unable to be interviewed because of his wounds.

• A person walked into Saint Bernard Hospital and Healthcare Center about 2:45 a.m. and told police he was shot in the leg the day before in the 8600 block of South Racine Avenue. Details were not available.

• A boy and a girl were shot in 4400 block of South Dearborn Street about 3:10 p.m., police said. The boy, 14, was shot in the thigh and the girl, 13, suffered a graze wound to the thigh, police said.

Both were taken to Comer Children's Hospital in good condition. Police said the boy was a documented gang member and that the two were shot by a car traveling north while the two were walking south.