Lionel Messi: Valencia to ban fan who threw bottle at Barcelona star

Valencia say they will ban for life the fan who hit Barcelona
forward Lionel Messi on the head with a plastic bottle in Sunday's La
Liga match.

http://www.bbc.com/sport/0/football/30272809

Fair, one idiot doesnt represent whole Valencia fans. Credit to the club for the fast reaction.

Bravo, well shit happens, one action somtimes can trigger domino affect. Im glad Valencia acts quickly and vigorously.

In scenarios like this, how are they able to identify the fan who through the bottle with thousands in the stands?

It appears that Valencia is trying to find the convict and ban him for life.