Authorities say Nikolas Cruz, 19, opened fire at Marjory Stoneman Douglas High School in Parkland, Fla., on Wednesday. Cruz was a former student at the school. At least 17 people were killed and several others were hospitalized with gunshot wounds.

Authorities say Nikolas Cruz, 19, opened fire at Marjory Stoneman Douglas High School in Parkland, Fla., on Wednesday. Cruz was a former student at the school. At least 17 people were killed and several others were hospitalized with gunshot wounds