I think I'd rather avoid the usual hysteria and rumor mongering that follows in the wake of initial reporting, and wait until we have concrete details to follow up on this with.
I know there was an explosion.
One person said dead.
Suspicion it was an explosive device though not confirmation?
Wait for details.
It has been my experience here, on FR, that sometimes things heard on the news and posted here, are not heard again, until the INVESTIGATION.