Edward Hannah, 19, is accused of making threats on social media to open fire at Central High School East's Prom. When police tracked down Hannah, he said it was all a joke.
Police deemed the threat credible and booked him on charges of criminal threats.
On Tuesday, Hannah failed to appear for court and authorities have now issued a $50,000 bench warrant.
Fresno Police are asking anyone with information as to Hannah's whereabouts to call the Fresno Police Department.