The kid didn't die in the chair. He died from trying to free himself of the grasp of one or two goons right in Arpajo's presence. His head was forced forward and down so that his airway was shut.
The chair was a convienient alibi.
edit- ok so what did you mean by verbatim? Verbatim means word for word. What words are you refering to? Wikipedia is no guarantee, you probably know that by now.
Edit2 - So you were answering my question of how you are sure Arpajo wasn't even in the building when it happened with a reference to Fishu's verbatim repeat of wikipedia, which doesn't answer my question.
How are you sure he wasn't there?