4 Firecrackers? 4 bottle-rockets? 4 sparklers?
If "We consider this very serious,..." then knock off the "pyrotechnic in nature" crap....call it what it is, a bomb.
The the Bic firewand I use to start my barbecue is "pyrotechnic in nature"!
http://www.nj1015.com/absolutenm/templates/?a=6969&z=1
Passaic County High School Evacuated After “Pyrotechnic Devices” Found
Thursday, June 14, 2007 - Millennium Radio New Jersey
by Martin DiCaro
It might be hard to blame students at Wayne Valley High School if they can’t totally focus on their final exams today. Yesterday, 1,400 students were evacuated and a massive law enforcement response descended upon the school after suspicious devices rigged with fuses were discovered in two lockers. A bomb squad safely removed what authorities called “pyrotechnic devices” after a student had spotted a fuse sticking out from a locker door on the second floor on the building at around 9 o’clock yesterday morning. Final exams will be held as planned today.
As of Thursday morning, no arrests had been made. Authorities said the incident would not be treated as a prank. The Passaic county prosecutor said if whoever planted the devices is a legal adult, he or she faces a mandatory prison sentence if convicted on possible charges. Prosecutor James Avigliano said several students were being questioned as “persons of interest.”
The devices looked like half sticks of dynamite. They were wrapped together in packs of four and rigged with fuses. Authorities called them “pyrotechnic devices” capable of causing a damaging fire with suffocating smoke which could have panicked students into a stampede down school hallways.
The five- to six-inch long sticks were removed by a bomb squad and later detonated in a safe area, causing “a fireball and huge amount purplish-gray smoke,” said the county sheriff, Jerry Speziale.