Five things to know about Douglas High School shooting suspect Nikolas Cruz
Nikolas Cruz, seen here in a booking photo obtained February 15, 2018 courtesy of the Broward County Sheriff's Office, has been charged with premeditated murder in the shooting deaths of 17 people at a Florida high school. (Broward County Sheriff's Office/AFP / Handout)

MIAMI — Here are five things to know about Nikolas Jacob Cruz, the suspect in Wednesday's murder of 17 people at Marjory Stoneman Douglas High School in Parkland, the third largest school shooting in United States history.