A teenager who warned his friends to stay away from a Two Rocks school after telling them he planned to “shoot” it up has admitted he was the one who pulled the trigger that plunged the facility into lockdown and leaving staff and students cowering for their lives. Members of the WA Police’s Tactical Response Group flooded Atlantis Beach Baptist College in May after reports a gunman was on the loose shooting at the school. When they arrived, they found the teen – who had called Triple-0 telling an operator what he had done and why – on the premises armed with a .243 hunting rifle and a .22 rifle. The 15-year-old had taken the weapons from his father’s safe then used his parents’ car to drive to the school where he opened fire hitting a demountable building. That bullet penetrated the wall and landed in the middle of the room where a music tutor was with a student playing the drums. The other bullet penetrated a storeroom at the side of the facility but became lodged in a wall of the toilet block. The 15-year-old was charged with a string of offences including discharging a gun and three counts of endangering the life and safety of others in relation to the shots that were fired. But during the teen’s latest appearance at WA’s Childrens Court on Monday, the hearing was told one of those endangering charges was dropped. The prosecutor told the court the State was discontinuing the charge because it was not in the public interest to pursue it because that bullet penetrated the ground. The State also dropped the possessing a gel blaster charge because the banned weapon was “incomplete”. Instead, the boy pleaded guilty to eight charges including discharging as well as possessing a weapon. At a previous hearing, the court was told around a week or so before the incident, the teenager had messaged a friend that he was “going to shoot up” the school and that he intended to “kill people and himself”. Two days before the shooting, the teen then told one friend not to attend school for the “next few days” and on the morning allegedly asked his two friends what classroom they were in. The court was also told an examination of the boy’s mobile phone found he had searched for information on US school shootings a few days before and had sent a Snapchat picture of himself to his friend on the morning of the shooting with words “something sinister” written in French. And after he fired the weapon, he called triple-0 and told the operator he had taken the rifles from his dad’s safe and had gone to the school “to kill people and then myself”. The court heard he then told the operator that he felt “angry” and that was why he went to the school to do what he did but then stopped because he didn’t want his siblings to have a murderer as a brother. The teen will be sentenced by Children’s Court President Hylton Quail in February.