The Delran, Mount Holly, Mount Laurel, Moorestown and Riverside districts were among 20 Burlington County school districts that received threats on Monday.
Prosecutor LaChia L. Bradshaw said the man was shot inside Mill Dam Park in Mount Holly late Monday afternoon in a parking lot near an entrance to the park.
Middletown schools have been sued by the family of 14-year-old Jocelyn Walters, who took her own life after repeated bullying and harassment by other students, according to the suit.