ABC News October 9, 2019

Man convicted of cyberstalking, threatening Parkland victims' families

WATCH: News headlines today: Dec. 23, 2020

A 22-year-old man was convicted Tuesday of cyberstalking and sending threats over social media to families of the Parkland shooting victims.

Brandon Fleury used 13 Instagram accounts -- which had aliases including alleged Parkland gunman Nikolas Cruz and serial killer Ted Bundy -- to target families and friends of Parkland victims from December 2018 to January, federal prosecutors in Florida said.

Joe Raedle/Getty Images
Shari Unger, Melissa Goldsmith and Giulianna Cerbono (L-R) hug each other as they visit a makeshift memorial setup in front of Marjory Stoneman Douglas High School, Feb. 18, 2018, in Parkland, Fla.
(MORE: Parkland shooting 1 year later: Remembering the 17 victims of the school massacre)

Seventeen students and staff were shot dead at Marjory Stoneman Douglas High School in Parkland, Florida, on Feb. 14, 2018, allegedly by Cruz, a former student. Cruz is awaiting trial.

Joe Raedle/Getty Images
People are brought out of the Marjory Stoneman Douglas High School after a shooting at the school that killed and injured multiple people, Feb. 14, 2018, in Parkland, Fla.

Some messages from Fleury were sent from the username "the.douglas.shooter" and had a profile picture of Cruz, prosecutors said.

(MORE: Security failures in Parkland school shooting included unlocked doors, no PA system)

One message said: "With the power of my AR-15, I take your loved ones away from you PERMANENTLY."

On Fleury's tablets, authorities found images of the targeted victims, screenshots of messages sent to victims as well as photos of Bundy, prosecutors said.

Broward County Sheriff's Office
Brandon Fleury in a police booking photo.
(MORE: Video of the confession by accused Parkland school shooter released)

Fleury, of Santa Ana, California, was convicted of interstate cyberstalking and interstate transmission of a threat to kidnap, prosecutors said.

He faces a maximum of 20 years in prison. Sentencing is set for Dec. 2.