After conducting an on-site sniffer dog training exercise at Sydney Airport, Australian federal police accidentally left behind a suitcase with 230-grams (8-ounces) of plastic explosives.

Three weeks later, a woman whose own suitcase was damaged during her travels was given the suitcase containing the explosives by airport staff. After arriving at home, she discovered the explosives, and took the suitcase to a local police station.

The Australian federal police has apologized for the incident and has stated that the explosives weren't live and didn't pose any danger.

http://www.bloomberg.com/news/2014-0...ing-drill.html