A new documentary aims to sink a popular theory that the Titanic’s accident with an iceberg was the key factor in its historic expiration.

The documentary named ‘Titanic: The New Evidence,’ aired on the U.K.’s Channel 4 on New Year’s Day. Senan Molony, Author and Titanic expert claims, newly uncovered photographs prove a fire in the ship’s structure played a much larger role the fire was raging in Titanic’s boiler rooms before she left port, that it was kept secret and, it’s now believed, that it led to the tragedy.

Molony said black marks on the vessel’s side, which can be seen in pictures taken before the doomed voyage, indicate that the Titanic’s infrastructure had been weakened by flames in the weeks leading up to the iceberg crash.

In 2004, Ohio State University engineering professor Robert Essenhigh suggested that an uncontrollable fire may have prompted the crew to pick up speed ― even in the midst of an ice field.

‘If there was a reason for the speed, it had to be something important – like a fire in the coal bunker that needed to be kept under control and then put out as soon as the ship reached port,’ Science Daily reported on Essenhigh’s theory in November 2004.

Molony came upon the trove of images at a 2012 auction in England, CNN reports. ‘This isn’t a simple story of colliding with an iceberg and sinking,’ Molony told British outlet The Times. ‘It’s a perfect storm of extraordinary factors coming together: fire, ice and criminal negligence.’

But not every Titanic expert is convinced that fire can be mentioned as the biggest factor in the ship’s sinking, as Molony theorizes.

David Hill, former secretary of the British Titanic Society, told The Times ‘There certainly was a fire. Was it a life-changer? It’s my personal opinion that it didn’t make a difference.’