User blog comment:Ktrfgfg/Chapter 53 Predictions + Volume12Special/@comment-24294971-20131224201110/@comment-179280-20140105075335

Two things:

1. PLEASE don't bring here that dumb debate about "Marco is alive", and

2. Marco wasn't murdered. He was bitten in half and no Shifter did it, because Titan Shifting can be spotted from miles away and nobody saw anything. Also, Isayama has said multiple times that Titans don't react to dead bodies; they only seek people that's alive to eat them, so, he couldn't be murdered first and then chewed.