Speaking with CBS Miami, Ryan Petty, whose daughter Alaina was killed in the Parkland shooting, urged families affected by the violence to be proactive in seeking help.

“It breaks my heart that we’ve lost yet another student from Stoneman Douglas,” Petty said. “My advice to parents is to ask questions, don’t wait.”

If you or someone you know is considering suicide or self harm, the National Suicide Prevention Lifeline offers free, round the clock resources and support.