The order of events for me was I entered the stadium about 2:25, normal security checks and pat-downs. Climbed the mountain of stairs to the back of Tier 3 towards the Stretford End, after a couple of minutes of being sat down an announcement was made for anyone in the North West part of the stadium to leave immediatley, the security in our area told us to remain and people continued to take their seats, then a few minutes later they announced operation code red to all secuirty in the stadium and asked everyone to leave (I think the East Stand and the away fans were kept in though). It was all very calm and people slowly made their way down the stairs, I heard one security guard tell someone it must either be a device found or threat phoned in. Once out of the stadium it was very slow and crowded but still calm as they announced kick off was delayed and people to make their way to the car parks, eventually got back to our car turned the radio on and heard it was just tweeted by Bournemouth the game was cancelled. There were a few people when coming down the stairs and in the crowds who were nervous/anxious but no one really in a panic. I think it was handled well.