[can16358p]

Nope; banging was officially announced in the press conference of the search and rescue team.

Though they could not confirm that it was really the sub (they probably thought that it was, but they can't officially say it).

[popey]

I think your sarcasm detector has developed a fault.

[can16358p]

Yeah, I was just too focused into the event to think properly... and even the sounds were apparently not it anyway.