The 17-year-old was further charged with possession of a knife/blade in a public place and the criminal damage of a mobile phone. He appeared at a magistrates court on Thursday where he was remanded in custody ahead of his next court hearing on 22 December.
One of the 16-year-olds was also further charged with possession of a knife/blade in a public place.
Insp Baines said officers had been carrying out patrols in the area and would “continue to be on hand to speak to anyone with concerns”.
“It is important that no commentary or information is published, including on social media, that could prejudice these court proceedings,” he added.