The incident was similar to the Twitter buzz in another city, Melbourne, Australia, where helicopters circled on March 19. That case ended up being anti-terrorism training.
The reason the Edinburgh helicopters were in the sky was still unknown at the time of this post, but speculation was rampant:
The helicopters puzzled and even agitated some Twitterers.
If you have information on why the incident occurred, please contact us @breakingtweets or leave a comment.