UPDATE: Ellicott City Girl, 16, Dead In Attempted Murder-Suicide

Howard County police are investigating a triple shooting Sunday in which a teenage boy fatally shot a teenage girl and wounded her mother before turning the gun on himself.

County police said officers were called around 2 a.m. to a house in the 4800 block of Knoll Glen Road in Ellicott City.

Investigators said the mother heard a scuffle in her daughter's bedroom. When she entered the room, a 15-year-old boy shot her and shot her 16-year-old daughter before shooting himself in the head, police said.

The girl, Charlotte Zaremba, 16, was taken to Howard County General Hospital, where she died.

The mother, Suzanne Zaremba, 52, was taken to Shock Trauma, where she was treated and released.

The 15-year-old boy was taken to Shock Trauma in critical condition with life-threatening injuries. Police did not immediately release the boy's identity. A motive was not known and it was unknown whether he has any connection to anyone in the house.

Another family member was in another area of the house at he time and was not injured. Anyone with information is asked to call police at 410-313-STOP or email HCPDcrimetips@howardcountymd.gov.

Howard County students mourn death of classmate

Charlotte was a sophomore at Howard High School. Her classmates mourned her death Monday at school.

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"Some students are wearing black just to show their support and express their grief," Howard County Public Schools spokesman John White said.

By all accounts, Charlotte had a bright future.

"Charlotte seems to have been a student that was well liked there have been a lot of posts on social media saying how sad people are and what a great person she was. Here at the school, she was involved in the Best Buddies Program, which helps special needs students so she seems to have been a very caring person," White said.

The principal sent an email to parents on Sunday telling them what happened and offering support:

"During guided discussions as needed, our teachers will help students talk about their feelings and reactions and identify coping resources at school and in the community."

The school had special counselors on hand Monday for students to talk to.

"In a case like this, we bring in a crisis team. We bring in experts and more staff to support anyone in need. An announcement was made to all students this morning about the sad news and the fact that support will be available and some students have taken advantage of it," White said.