HILLSBOROUGH COUNTY, Fla. – The Hillsborough County Sheriff’s Office (HCSO) today arrested Michael Difabio, 58, a custodian at King High School, for possession of a firearm on school grounds. School administrators alerted HCSO’s STAR Team at approximately 11:15 a.m. this morning after discovering a firearm secured in a maintenance closet. An investigation revealed that the firearm belonged to Difabio, who had been employed at the school since January 2023. Read: Clearwater Police Investigate Armed Robbery At Publix, Searching For Suspects “There is no place for weapons on school grounds. Schoo…