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SOUTHWEST MIAMI-DADE (CBSMiami) — New surveillance tape shows some frightening moments as a 16-year-old youngster is shot and killed in a drive-by.

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Miami-Dade Schools Superintendent Alberto Carvalho has a plan to try to curb the violence after three teenagers were wounded and two others killed this past weekend in separate incidents. And the mother of 16-year-old Rahkeem Brown is speaking out after a 15-year-old youngster who is the accused shooter has been arrested.

Rontisha Brown told CBS4’s Peter D’Oench, “He was my world. He wasn’t just my son. All five of my kids mean the world to me. He didn’t just touch us. He touched everyone. You have no idea how many people he touched.”

Brown said, “The devil is busy jumping into our kids. Our kids don’t know God. It has to stop. The killings must stop. We are going to lose all of our kids if the killings don’t stop.”

Brown spoke as CBS4 obtained surveillance tape from a neighbor’s camera that showed the moments when Brown was shot around 6:20 p.m. near S.W. 141st Ave. and S.W. 280th St. The tape showed what Miami-Dade Police said was a black, four-door KIA driving up and three youngsters running for cover as shots were fired.

Tyvontae Robinson, 16, was wounded and rushed to Kendall Regional Medical Center.

Rahkeem Brown was killed.

“My brother was a good boy. We are grateful an arrest has been made but we need to find the others who were there,” Brown’s sister Kiki Clark said. “We want everybody who was in the car when my brother got killed. My brother was always happy. He liked to play basketball and football. Just please let us know who did this. We need to stop the killing.”

Miami-Dade Police say 15-year-old Dennis Shelby, Jr. has been charged with first-degree murder.

His appearance was waived for a detention hearing in Miami. As his mother listened, her son was appointed a Public Defender for his case and Shelby was ordered to be held in secure detention until another hearing on February 6th.

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The judge ruled that Shelby was considered a “risk to the community” and a prosecutor said the case would be presented to a grand jury.

CBS4 tried to speak to Shelby’s mother after the hearing but she ran to a waiting car and declined to say anything.

Miami-Dade Police say they are looking into whether Brown’s shooting was retaliation for another incident 18 hours earlier that happened just before midnight on Saturday in Florida City at N.W. 12th St. and Eighth Place in Florida City.

Police say 17-year-old South Dade Senior High School Senior Noricia Talabert was shot and killed while driving with two passengers, Daquantay Allen and 17-year-old Deanna Clayton. Clayton has a bandage around the knee that was struck by two bullets. It still has shrapnel in it.

Miami-Dade Schools Superintendent Alberto Carvalho told D’Oench, “Obviously, it is heartbreaking and disturbing, the callous and destructive nature of shootings that keep killing men and kids. This is

“We know that this code of silence is alive in communities in which people know much more than they talk about,” he added. “It is the worst type of insult that any community can feel when there is such disrespect for the sanctity of life.”

Carvalho said he believed in solutions coming from “positive energy.”

“I’m going to be reaching out to municipal leaders and chiefs of police to again have a round table discussion about community initiatives and steps that can be taken to minimize the violence affecting so many around Miami-Dade,” said Carvalho.

“Kids are safe in school,” he said. “We need to make sure they are safe after school. There needs to be more opportunities for kids after school and activities after school in parks but these are just a few measures we can discuss.”

Miami-Dade Police say anyone with information about the shootings of Noricia Talabert and Rahkeem Brown should call Miami-Dade Crime Stoppers at (305) 471-TIPS (8477).

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There are rewards of up to $3,000 in each case.

Peter D'Oench