California residents who lit illegal fireworks over the July 4 holiday may be in for a nasty surprise in the mail thanks to covert fire department operations.

An 8-year-old girl died in Southern California after being caught in an explosion at an illegal fireworks show, police reported. A homeowner set up a large display of illegal fireworks in a Buena Park street at 9:45 p.

The girl was fatally injured when a "large illegal fireworks display" set up by a local resident went awry, triggering an explosion, police said.