The teen’s attorneys had sought his release last month, but the judge denied that request at the time. They argued he had behaved well in custody and was keeping up with high school classes. Prosecutors opposed release, saying he posed a risk to the community because he was willing to fire a gun at a crowded festival.

The teen has not been charged with murder. Ballistic evidence presented at an earlier court appearance indicated his gun likely did not match the bullets that killed three people, according to the account of the proceedings. He faces charges of assault with a firearm enhancement and unlawful possession of a firearm.

Court documents described in the case say the teen met with 11 other people before going to the festival, and that members of the group had pictures of nearly a dozen guns. Prosecutors also cited an Instagram group chat they said was active before and after the shooting, including messages about the teen’s arrest, the death of a friend who was also considered a suspect, and creating another chat to limit the spread of information.

Seattle police have said the teen was one of at least four suspects. Another suspect died during the July shootout, and police are investigating two people of interest. Two festival attendees died in the shooting, and four people were injured, including a 2-year-old boy.

The electronic monitoring order allows the teen to leave jail while the case proceeds, but he remains charged and has not been convicted. The charges and allegations will be tested in court.