Ellicott City, Md., Rabi'II 05, 1438, January 03, 2017, SPA -- Police say a 15-year-old Maryland boy who fatally shot a teenage girl and injured her mother in an attack inside their home has died, AP reported. Howard County Police spokeswoman Sherry Llewellyn said Sean Crizer died Tuesday. Police say in a statement that Crizer and 16-year-old Charlotte Zaremba attended the same school and lived in the same Ellicott City neighborhood, but authorities found no sign of a relationship. Police say Suzanne Zaremba heard a scuffle in her daughter's bedroom early Sunday after picking her up from a New Year's party. She found her daughter struggling with a masked person, who shot them and himself. Charlotte Zaremba died at a hospital and her mother was treated and released. Police say the gun was stolen from another home in the neighborhood. --SPA 22:38 LOCAL TIME 19:38 GMT www.spa.gov.sa/w305704