Fontana High School bomb threat not credible - police

FONTANA, Calif. (KABC) -- Police said a bomb threat was made against Fontana High School, but authorities described the threat as not credible after a campus search turned up nothing.

The threat also threatened harm on some specific staff members, authorities said.

Fontana police said investigators and bomb-sniffing dogs searched the campus overnight but did not find anything.

Classes were slated to go on as scheduled on Thursday, but there will be an increased police presence.