DeKalb police spokesman Maj. Stephen Fore said Monday the investigation was still active and he hoped to have more information to release later in the week.
It wasn’t immediately clear how many people have been charged in the case. The warrants list four other adults besides McGhee and the brothers who were at the home during the shooting. Fore said the department wasn't prepared to release information on "the possibility of additional suspects..."
Three children were also there but weren't injured.
McGhee remained jailed Monday after her Saturday arrest.
The shooting happened early in the morning at a home off Tunbridge Wells Road, according to police.
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Chad Collins, 24, told police his brother went outside to quiet a barking dog, at the request of McGhee and others. He reported hearing his brother say “chill out,” before a gunshot. Chad Collins then ran outside to help and was also shot.
Everyone fled the scene, except for Jordan Collins, who lay dead on the back patio.
A search of a cell phone led police to McGhee, the warrants say.