A student at Jeremiah Burke High School in Dorchester is in stable condition after he was shot by another student this morning.
Boston Police Superintendent of Investigatory Services Felipe Colon said the suspect in the shooting has been arrested, and a firearm was recovered at the scene.
"Shortly after the incident, a description of the suspect was broadcasted," Colon said. "Additional officers responding to the scene located an individual matching that description. That individual is positively [identified] as the suspect."
The school went into lockdown after the shooting, at about 9:30 a.m.
District Attorney Kevin Hayden said city and county officials are focused on the investigation and healing at the school.
"We are together, collectively concerned for this community," Hayden said, "for the students involved, for the administration."
Boston school officials say they have extra staff on hand today to help support students.
With reporting from WBUR's Jon Cain and the News Desk
This is a developing story. It will continue to be updated as information becomes available.