What was the banging noise picked up in search for Titanic sub?

The latest headlines from our reporters across the US sent straight to your inbox each weekday Your briefing on the latest headlines from across the US Please enter a valid email address Please enter a valid email address SIGN UP I would like to be emailed about offers, events and updates from The Independent. Hopes had been raised when the US Coast Guard revealed that sonar devices had detected banging sounds coming from the search zone, a vast area of the North Atlantic Ocean twice the size of Connecticut. “We don’t know the source of that noise, but we’ve shared that information with Navy experts to classify it,” US Coast Guard Rear Admiral John Mauger told CBS This Morning. “With respect to the noises specifically, we don’t know what they are, to be frank with you,” Captain Jamie Frederick of the First Coast Guard District told reporters on Wednesday. Jeff Karson, professor emeritus of earth and environmental sciences at Syracuse University, told Mail Online while the search was underway that the noise could be a “complicated echo” coming from sounds bouncing around the Titanic debris field.