DALLAS (CBSDFW.COM) — Dallas Police said Thursday that an arrest was made in the case of Gabrielle Simmons who was killed during a robbery at a Dollar General store Monday. The mother of six was killed after giving up money from the register.

Officials said a 15-year-old juvenile suspect had been taken into custody at about 1:00pm “without incident” in connection with the death of Simmons.

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Police said they had been in “contact” with the suspect before for a family-related offense.

In a press conference held Thursday, police said that tips from the public helped them catch the alleged killer.

“Through the collective efforts of the department, the media and the citizens of Dallas, tips flowed in to the Crime Stoppers unit,” said Deputy Chief Malik Aziz of the Dallas Police Department.

Aziz said that the suspect was taken to the Dallas Police Department’s Youth Division for processing.

When asked about a possible accomplice who worked as a look-out during the fatal robbery officials simply responded by saying that the case is still under investigation.

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Simmons, a mother of six children, was shot in the chest after giving up the money in her register during the robbery.

“That was a very coward move of him. She gave up not only the money but she gave him the whole register and he still shot and killed her,” said Christopher Simmons, the victim’s brother.

Simmons said his sister was working at Dollar General to save up money to buy Christmas presents for her kids.

“She didn’t do anything wrong. She just went to work, she was on the clock working. She complied with everything and still lost her life,” said Simmons.

Investigators earlier released new security camera footage on Wednesday night that appeared to show a second person working with the gunman.

Dallas Police Full Press Conference Below

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