Prince George's County police have charged a 16-year-old boy with shooting two of his classmates during an argument.
It happened Sunday afternoon in Clinton while the three were playing video games.
Police say Delano Dunmore is facing two counts of attempted first-degree murder, two counts of attempted second-degree murder and assault charges after they say he got into an argument with his classmates -- all members of the football team -- grabbed his mother's gun and shot them before shooting himself.
One of the victims was critically injured. Dunmore and the other victim both suffered non-life-threatening injuries.
Dunmore is being charged as an adult in this case.
Police say Dunmore's mother was not home at the time and the reason for the argument is still under investigation.
Investigators with the county police installed a padlock on the front door of the home where the teenagers were shot Sunday and marked the entrance with an evidence seal.
On Sunday just before 4 p.m., police were called to the house for a multiple shooting. Officers found three wounded teens and a gun inside the home.
But how and why Dunmore shot himself is unclear.
The school system confirmed all three teenagers attend Frederick Douglass High School in Upper Marlboro. Dunmore is a member of the school's football team and is listed on the team's website as a 240-pound defensive end.
A source familiar with the investigation says the other gunshot victims are players on the football team as well.
The football team went undefeated this past season and won the Maryland 2A state championship.
There was no school in Prince George's County on Monday, but a spokesperson for the school system says a letter will be going home to parents at dismissal on Tuesday. Counselors will also be made available.