Argentina missing submarine: Satellite signals detected
Signals have been detected that are thought to have come from an Argentine submarine that went missing with 44 crew on board, officials say.
The defence ministry is now trying to trace the location of the seven failed satellite calls received on Saturday.
Argentina has stepped up the search in the South Atlantic for the ARA San Juan submarine, with a Nasa research plane joining in.
The diesel-electric vessel disappeared 430km (267 miles) off the coast.
Source: bbc.com