7-year-old girl murdered, 6-year-old hurt as gunfire erupted at a Chicago home. Police say they arrested a suspect.

A 7-year-old girl was shot and killed in Chicago in August, and police have now arrested one suspect in the case.

Police also said a 6-year-old was injured in the gunfire, but survived the assault.

On Aug. 15, in the 6200 block of West Grand Avenue in Chicago, Serenity Broughton, 7, and Aubrey Broughton, 6, were being put inside a vehicle by their mother when gunfire erupted, according to WGN 9.

Serenity was shot in the chest and torso and later died at the hospital, WGN 9 reported.

Police believe the shooters were targeting a relative in the home, Chief of Detectives Brendan Deenihan said, according to WGN 9.

Aireon Luster, 24, was arrested in the basement of his grandmother’s home in Riverside on Oct. 13 in connection with the shooting, WGN 9 reported.

Luster has been charged with first-degree murder and first-degree attempted murder, according to WGN 9.

Luster is the same suspect arrested in September but was released when the Cook County State’s Attorney’s Office initially said there was not enough evidence to charge him, WGN 9 reported.

Since that last time, additional evidence surfaced, leading to Luster’s arrest, according to WGN 9.

Police are asking for the public’s help with locating the second shooter and the driver of the vehicle, WGN 9 reported. A $2,000 reward was offered for information leading to an arrest. Anyone with information can leave an anonymous tip at cpdtip.com.