The shooter — identified as Austin Wyatt Rollins, 17 — was injured and taken to the hospital, where he died, officials said.
Potential injuries were not immediately known and the St. Mary's County Sheriff's Office said in a statement that the incident was 'contained.'
Nikolas Cruz's half-brother, Zachary, said he visited the campus to "reflect on the school shooting and to soak it in," according to an arrest report.
The House passed a bill that authorizes grants intended to help students and staff identify and report threats before they erupt.
Those closest to the three victims shot and killed Friday at a veterans home in Yountville, California, said they were dedicated to helping their patients.
Classes had let out at Huffman High School in Birmingham, but many students and faculty were still on campus for after-school activities.
The CMU police chief said officers had encountered Davis multiple times in the 24-hours leading up to Friday's shooting.
Central Michigan University campus was on lockdown Friday after two people were fatally shot and police were hunting for an 'armed and dangerous' gunman.
Central Michigan University campus was on lockdown Friday after two people were shot and police were hunting for an "armed and dangerous" gunman.
For students at Marjory Stoneman Douglas High School and their families, the return to classes two weeks after 17 people were killed was difficult.