Chief Keef, brown jacket, walks into Juvenile Court on Jan. 15, 2013, with friend Capo. View Full Caption DNAinfo/Jean Lachat

CHICAGO — Chicago rapper Capo, a part of Chief Keef's Glo Gang crew of rappers, was shot and killed in the South Shore neighborhood Saturday afternoon during a string of carnage that police say may also include the death of a 13-month-old.

Capo's alleged killers are suspected of running over and killing a 13-month-old baby in a stroller as they fled the broad daylight crime scene. Two are in custody, but no charges have been filed as of Sunday afternoon.

The 22-year-old Capo was shot in the back and hip while standing outside in the 7700 block of South Kingston Avenue at about 1:40 p.m. Saturday. A video of the aftermath shows him on the ground, bleeding badly as bystanders coax him to hang on.

He was taken to Northwestern Memorial Hospital, but he died. TMZ first reported that the dead man was Capo. Fox Chicago, quoting Capo's manager Renaldo Hess, said the rapper, real name Marvin Carr, was dead.

“He was a good kid. The streets of Chicago is something,” Hess said, according to Fox. “He was murdered. I don’t understand what is going on with all these kids.

Shamus Toomey discusses the shooting and nearby fatal crash:

Police and the Cook County Medical Examiner's office didn't confirm Carr's death. But police did say a "documented gang member" was slain at 1:40 p.m. Saturday in the 7700 block of South Kingston.

Arthur Yancy, a friend of Capo and the building manager of an apartment complex on the block where he died, said he ran outside as soon as he heard gunshots. There he found his friend laid out and bleeding on the sidewalk.

"It's just unbelievable, there are really no words for that," Yancy said. "It's so hurtful to see such a young life taken away right in front of you... It's the kind of thing you hear about on the news sometimes, but when it happens right where you live, it hits home."

Yancy said Capo was well-respected in the South Shore neighborhood, where the rapper lived. People knew him as a "good dude," Yancy said, and everyone listened to his music.

"He was a great man, and an aspiring artist. ... People around here are sort of like a big family, and I think what happened just hit us all hard," Yancy said. "To strike a man down in broad daylight like that...I just don't know what could be on [the shooters'] minds. They must have no conscience."

Social media lit up late Saturday with memorials to the rapper, including from well-known Chicago rapper Chief Keef, who directed an Instagram post saying "I love u" to Capo's account. Rapper Lil Durk also posted an Instagram photo, captioned "Rip capo."

Rip capo A photo posted by LIL DURK‼️‼️ (@real_lildurk) on Jul 11, 2015 at 6:56pm PDT

this city cold — LIL DURK (@lildurk_) July 12, 2015

Police are investigating if the killers were the same people who drove into the nearby Woodlawn neighborhood and crashed into a baby being pushed in a stroller, killing the young boy.

Two of the people in the car were caught and were being questioned as "persons of interest" by detectives late Saturday, a police spokesman said.

The boy was rushed to a hospital, but doctors couldn't save him.

The mother of a 13-month-old boy is consoled after he was killed by a hit and run driver. (DNAinfo/Devlin Brown)

The baby, Dillan Harris, was in the 6300 block of South Ellis Avenue when it happened, police said. A crumpled stroller could be seen in the grass following the tragedy.

Police say the car might have been fleeing the shooting in the 7700 block of South Kingston Avenue.

An officer stands guard over the stroller that a 13-month-old was in when he was struck and killed. (DNAinfo/Devlin Brown)

Chief Keef, born Keith Cozart, has made headlines for the past three years in Chicago, from nabbing a huge $6 million recording contract with Interscope Records before he turned 18, to getting busted doing 110 mph on the Edens Expy., to renting a mansion in the suburbs and tearing up the lawns there by driving ATVs in circles around the house while smoking blunts.

He's been in and out of trouble, getting busted for pointing a gun at a police officer, violating his probation in that case by appearing with a rifle in a Pitchfork video and then failing drug tests mandated by his speeding arrest.

He's also seen tragedy follow him, with his stepbrother and cousin getting slain in the streets of Chicago.

Now, one of his inner circle is dead. Capo was party of the Glo Gang crew and had recently released an album.

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