Signed 'An employee of Marfin Bank' with a link to read the Greek original. It's a shame they weren't brave enough to give their name.
http://www.occupiedlondon.org/blog/2010/05/05/an-employee-of-marfin-bank-speaks-on-tonights-tragic-deaths-in-athens/
I doubt they will ever get the individual who lobbed the firebomb, perhaps they should prosecute the Bank?