Maybe not thief, just incompetent. No proof, that it was he who stole bitcoins.
It's really hard to say which scenario is more believable.
It's already been reported that Mark managed to embezzled millions out of MtGox. Now you have the US Government going after MtGox along with Toyko. I wouldn't be surprised if next we read about Mark being added to Interpol's wanted list.
Please show us where thats been reported.
He hasnt run as far as anyones aware so i dont see why he would need to be added to Interpols most wanted list. Wouldnt it just be easier to send the local police to his home or office?
What office? MtGox office doesn't exist anymore and for we know Mark could emailing the media from some beach in Timbuktu.