apparently the 97 would refer to the number of those killed
although wikipedia says 96
(
lordsaccharine b3taing is well retro mate,
Fri 18 Apr 2008, 16:12,
archived)
It could have been 96, It was a few years back and my memory isn't perfect.
(
gronkpan https://twitter.com/VomitingLarry,
Fri 18 Apr 2008, 16:14,
archived)