A local sheriff said Friday that the man who shot and killed a grandmother and her infant grandson in a Florida supermarket had expressed his wish to kill children on Facebook.

On Thursday, Timothy Wall, 55, allegedly turned the gun on himself after pushing the 69-year-old victim to the ground and shooting her inside the Royal Palm Beach Publix Supermarket.

According to CBS 12 News, Palm Beach County Sheriff Ric Bradshaw remarked at a press conference that “there was a potential that this could be stopped.” “He's on Facebook,” says the narrator. 'I want to kill people and children,' he has stated. Obviously, he has pals because they saw that.”

“It was known that horrible things were going to happen to this guy.”

Wall had no known relationship to the victims, according to police, who have not discovered any motives for the crime.