Deptford High School went into lockdown Friday after an apparent picture of a student inside a school bathroom holding a gun, which was later determined to be a toy, was reported by school staff, district officials said. “An image of an individual posing in a restroom while holding a gun, with a location tag of ‘Deptford Township High School,’ came to our high school staff’s attention today,” Superintendent Kevin Kanauss said Friday afternoon in a letter to parents. “The high school went into lockdown, and Deptford Township Police quickly arrived at the building. The student in the photo was f…