CNN  — 

The mass shooting at a popular food festival in Northern California claimed the lives of three young people Sunday, including two children.

Six-year-old Stephen Romero, 13-year-old Keyla Salazar and Trevor Irby, a 2017 college graduate, were killed Sunday when a gunman sneaked into the Gilroy Garlic Festival and began firing. Police killed the shooter.

A family in disbelief

Stephen’s father, Alberto Romero, told CNN affiliate the San Jose Mercury News newspaper that he was at home when his wife called to say she, her mother and their son had been shot at the annual festival.

“I couldn’t believe what was happening, that what she was saying was a lie, maybe I was dreaming,” he said.