The suspicious package identified
Manchester United Soccer Match 'Abandoned' After Suspicious Package Found at Stadium
http://www.nbcnews.com/news/sports/manchester-united-soccer-match-abandoned-after-suspicious-package-found-stadium-n574326
The suspicious package that led to the delay of the Manchester United match at the team's Old Trafford stadium was a device left behind by a company performing a training exercise with bomb-sniffing dogs.
After an inspection of the stands, John O'Hare with the Greater Manchester Police said, "Following today's controlled explosion, we have since found out that the item was a training device which had accidentally been left by a private company following a training exercise involving explosive search dogs."
"Whilst this item did not turn out to be a viable explosive, on appearance this device was as real as could be, and the decision to evacuate the stadium was the right thing to do, until we could be sure that people were not at risk," he said.
I would hate to be the one who led that training exercise.