An abnormal sound detected in the South Atlantic ocean hours after an Argentinian navy submarine sent its last signal last week was “consistent with an explosion,” a navy spokesman said on Thursday.

Captain Enrique Balbi described the blast in the morning of 15 November as “abnormal, singular, short, violent” and “non-nuclear” and said it was detected at 10.31am along the route the ARA San Juan was following when it last made radio contact three hours earlier. The sound has been pinpointed to within a radius of 125km. Six vessels are currently attempting to locate the submarine, in an area that was previously searched. The explosion was detected by US sensors and by international agencies responsible for the detection of nuclear explosions around the world, Balbi said.(theguardian)…[+]