Reading the first (confused) reports, it looks like the US Navy took the ship once the pirates murdered their four American hostages. Some pirates are actually in custody, apparently: which means that their home base could be theoretically traced back.
I kept quiet about this situation while it was going on, but now that it’s ended in atrocity allow me to be a little cold here: if we want to discourage piracy and murder, there is precisely one way of doing that – and that’s encouraging a healthy fear of the consequences of one’s actions. Dope these guys up, find out where they live, send a punitive expedition. Burn every boat and docking facility. Burn the local leader’s house. Gibbet the surviving pirates in front of the ashes.
And shrug when when the ‘international community’ hypocritically complains.
As I said: cold. But if pirates think that they can murder civilians with impunity, they will murder civilians with impunity. They do murder citizens with impunity, in fact. They won’t stop simply because we ask them to. Tell them to, sure; ask, no.
UPDATE: AoSHQ has more.