Nikolas Jacob Cruz, age 19, is seen on February 14, 2018 in this mugshot booking photograph provided by the Broward County, Florida Sheriff's Office. Cruz was arrested and charged with 17 counts of premeditated murder after opening fire at Marjory Stoneman Douglas High School in Parkland, Florida, killing 17 people and injuring 14 others. Cruz was a former student at the school who had been expelled last year. He is believed to have been armed with an AR-15-style semi-automatic rifle. Credit: Florida Sheriff's Office / eyevine