Today at approximately 9:00am, Boston Police officers responded to English High School in Jamaica Plain to assist School Police officers with a disturbance.Preliminary information indicates that several teens entered the premises of the school and created a disturbance. Officers were made aware that several teens who were non-English High students were on the property. When officers located the teens they were involved in an altercation with others. While officers were attempting to disperse the group, they noticed one teen focused on and reaching for a school bag. Inside that bag officers located a loaded firearm. At that time, officers placed 17 year old Walter West of Dorchester under arrest and charged him with Unlawful Possession of a Firearm, Unlawful Possession of Ammunition, Unlawful Possession of a Firearm on School Property, Resisting Arrest and Trespassing. Several other teens involved in the disturbance fled the property. Officers soon caught up with each of the individuals and charged them all with Trespassing and Disturbing a Public Assembly. The suspects include: Damien Oliver, 17, of Dorchester, Tyrone Rutledge, 17, of Dorchester and two juveniles ages 16 and 13. The suspects are expected to be arraigned tomorrow. BPD Media Relations will release additional information on this incident as it becomes available.