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People walk past a cross setup during a candle light memorial service for the victims of the shooting at Marjory Stoneman Douglas High School that killed 17 people on Feb. 15, 2018 in Parkland, Florida. Yesterday police arrested 19 year old former student Nikolas Cruz in the killing of the high school students.

People attend a candlelit memorial service for the victims of the shooting at Marjory Stoneman Douglas High School that killed 17 people on Feb. 15, 2018 in Parkland, Florida. Yesterday police arrested 19 year old former student Nikolas Cruz in the killing of the high school students.

Maria Reyes, Stacy Buehler and Tiffany Goldberg light candles around a cross as they attend a candlelight memorial service for the victims of the shooting at Marjory Stoneman Douglas High School that killed 17 people on Feb. 15, 2018 in Parkland, Florida. Yesterday police arrested 19 year old former student Nikolas Cruz in the killing of the high school students.

Students grieve at Pine Trails Park for the victims of the Wednesday shooting at Marjory Stoneman Douglas High School, in Parkland, Fla., Thursday, Feb. 15, 2018. Nikolas Cruz, a former student, was charged with 17 counts of premeditated murder on Thursday.

Mourners react during a candlelight vigil for the victims of Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

Thousands of mourners attend a candlelight vigil for victims of the Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

Mourners grieve as they await the start of a candlelight vigil for victims of the Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

A person sheds tears as he attends a candlelit memorial service for the victims of the shooting at Marjory Stoneman Douglas High School that killed 17 people on Feb. 15, 2018 in Parkland, Florida. Yesterday police arrested 19 year old former student Nikolas Cruz in the killing of the high school students.

Mourners grieve as they await the start of a candlelight vigil for victims of the Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

Mourners hug as they place flowers on a makeshift memorial for victims of the Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

Mourners hug after placing flowers on a makeshift memorial honoring the victims of Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

Mourners embrace after placing flowers on a makeshift memorial for the victims of Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

A mourner kneels in front of a makeshift memorial for the victims of Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

Mourners hug after placing flowers on a makeshift memorial for the victims of Marjory Stoneman Douglas High School shooting in Parkland, Florida on Feb. 15, 2018. A former student, Nikolas Cruz, opened fire at the Florida high school leaving 17 people dead and 15 injured.

Mourners gather at a vigil that was held for the victims of the shooting at Marjory Stoneman Douglas High School, Thusday, Feb. 15, 2018, in Parkland, Fla. The teenager accused of using a semi-automatic rifle to kill more than a dozen people and injuring others at a Florida high school confessed to carrying out one of the nation's deadliest school shootings and concealing extra ammunition in his backpack, according to a sheriff's department report released Thursday.

Students grieve during a vigil at Pine Trails Park for the victims of the Wednesday shooting at Marjory Stoneman Douglas High School, in Parkland, Fla., Thursday, Feb. 15, 2018. Nikolas Cruz, a former student, was charged with 17 counts of premeditated murder on Thursday.

Attendees hold up their candles at a candlelight vigil for the victims of the shooting at Marjory Stoneman Douglas High School, Thursday, Feb. 15, 2018, in Parkland, Fla. The teenager accused of using a semi-automatic rifle to kill more than a dozen people and injuring others at a Florida high school confessed to carrying out one of the nation's deadliest school shootings and concealing extra ammunition in his backpack, according to a sheriff's department report released Thursday.