"chased by a British helicopter before its disappearance"
An Argentine submarine that went missing with its 44 sailors in November had been chased by a British helicopter before its disappearance, it has been claimed. The sister of one of the sailors said this was her brother’s final message.
Jesica Medina said she got a message from her brother Roberto Daniel just days before the vessel vanished on November 15. (2017)
https://www.rt.com/uk/413262-argentine-submarine-british-helicopter/