For a full report, read the truly excellent article about this war in The Times, "BILLION DOLLAR BABY" by Cappittoo. Here's a brief summary, 100% based on the article in The Times :

At 08-12, 21:30 OT Fnatic, an LC from Silencium, shoots and kills Hellone, roulette owner in Wicked. The motivation for the kill is that Fnatic thinks that by killing the roulette owner he'll receive all the money in the casinobank. He furthermore assumes that the casinobank contains over 1 billion because the total profit is over 1 billion.
Of course, Silencium had to pay bloodmoney to Wicked, despite Fnatic's misleading profile (stating that he was a Turquality member). The amount Wicked demanded was 200M, outrageously high. Silencium tops could never pay such vast sums of money, and were left with no other option than to suicide on Wicked. Which they did.

Personal thought: times of death and amount of kills don't match with Silencium suiciding on Wicked.. looks more like Wicked killing off Silencium because they wouldn't pay the money or were planning to attack Wicked, and already killed Stranger. Perhaps decs on both sides at the same time.