CAD future bid/ask question

A few days ago I was watching quotes for the CAD March contract and the bid/ask was a steady .9907 .9909 with the last transaction at .9907, very slow time and not much movement.

Then out of the blue a low ball bid came in at .9885 and was filled at .9885, the bid then want back to .9907 and then the last transaction went back to .9907. I wasn't watching the number of contracts so don't know how many contracts passed hands at .0022 below market.

What caused this? Was it a pre-arranged sale at .9885? Would a stop be activated even though it was very brief, maybe 10 seconds or so.

 

?.......a "bad" tick.........that price may have been part of a spread or combo trade.

 

...or something from the dark-pool splashed on your screen. Who's your broker?

 

Interactive Brokers and the time was about 1:30 AM EST. I figured it was an organized trade at a set price and time between two parties.