FORT WORTH, Texas — Police have arrested two suspects in connection to the mass shooting in a Fort Worth neighborhood where three died and another eight people were injured, according to sources from the Fort Worth Police Department.

Officers arrested Christopher Redic, 20, and Brandon Williams, 19, Friday and charged them with murder and aggravated assault with a deadly weapon, police sources say.

During a press conference Friday afternoon, Fort Worth Police Chief Neil Noakes said the investigation is still ongoing, and they have not ruled out whether there were any other shooters involved.

“We do believe this is gang-related,” Noakes said.

Both suspects arrested are from Fort Worth, Noakes added.

Noakes said police do believe there was some type of altercation immediately prior to the shots being fired that may have potentially initiated the violence.

Three people were killed and eight people were injured in the shooting that happened on July 3. Cynthia Santos, 22, Gabriella Navarrete, 18, and Paul Willis, 18, were killed.