Questions raised over Greek coast guard's role in Pakistani migrant boat tragedy.

Survivors of a migrant boat disaster off the coast of Greece have pointed blame at the Greek coast guard, suggesting more lives could have been saved and may even point to fault on the part of Greek authorities. The Hellenic Coast Guard has repeatedly denied attempting to tow the vessel. An official investigation into the cause of the tragedy is still ongoing. Human rights groups say the authorities had a duty to act to save lives, regardless of what people on board were saying to the coast guard before the migrant boat capsized.