Mysterious Shag Harbour Incident

It was a mysterious explosion incident that happened in the Shag Port, Nova Scotia, on October 4 1967. An object bashed the Shag Port struck 11.20 nights, caused the big explosion. There were no fatalities. The witnesses saw the object like “UFO”. Not old afterwards, the place was immediately closed. The Canada military side immediately arrived. In time in an instant, the place was cleaned and ruins were immediately carried. The incident apparently really was covered up. What in fact that happened? Really the UFO that fell? The Canada government had not dismissed statement anything about this. And till today, this mystery had not been revealed.