This delivery platform - I'm assuming it was a generic Scud type and not literally a Scud missile - isn't particularly accurate for testing purposes; that is, you wouldn't just park a herd of sheep out in a test facility somewhere and expect to hit it. Either the story isn't anywhere near complete or something rather nasty was in the offing. Inquiring minds want to know...
There are these things called test ranges that are normally used that sort of thing.
I am not so sure we know yet what actually caused the explosion or if there were any IDF lasers around at the time.