The US Coast Guard leading the desperate search for the missing submersible that ventured to the Titanic have said they “don’t know” what is causing the noises heard - as they revealed the search area has been expanded again.
Noises that resembled "banging" were captured by a Canadian patrol aircraft on Tuesday and Wednesday in the attempt to find the missing Titan submersible.
However, the US Coast Guard said they believe they are looking in the right area and insisted the efforts to find the five missing people aboard the Titan was still “a rescue mission”.
