Four Americans killed by pirates in February, what happened?

I haven’t heard of any explanation why the pirates decided to kill the four American sailors back in February, with a Navy Destroyer nearby. Did any details ever come out?

Because they come from a region where you can hack up your neighbor with a machete in the morning and go grab lunch without missing a step. Death is cheap in thar region.

The Christian Science Monitor suggests it might have been in retaliation for the killing of pirates by foreign navies: