The five crew members on board the missing Titan submersible died in a “catastrophic implosion”, the US Coast Guard has confirmed.

Oceangate Expeditions CEO Stockton Rush, Pakistani businessman Shahzada Dawood and his son Suleman, British billionaire Hamish Harding, and French adventurer Paul-Henri Nargeolet were on a dive to the Titanic shipwreck when the vessel lost communication with its support ship on Sunday 18 June.

A frantic search for the missing submersible unfolded over the course of four days, before news of the “catastrophic implosion” was confirmed on Thursday.

The hearing of the Titan submersible - what to expect.

Unraveling the Titan submersible disaster— What to expect as the enquiry unfolds

The sub's tail cone lying at the bottom of the Atlantic

Under-sea video shows doomed Titan sub's tail cone after it imploded en route to Titanic wreckage

Five men died on the OceanGate Titan vessel.

Titan was 'abomination of a sub', crucial OceanGate witness claims

Five people died when the Titan sub imploded on a dive to see the Titanic

OceanGate wanted Titan sub pilots to dive to Titanic after just one days training, whistleblower reveals

Tony Nissen, head engineer for OceanGate (l) and the Oceangate sub (r)

Titan submarine’s lead engineer tells inquiry he ‘felt pressure' to get vessel ready for doomed Titanic dive

Final words from the doomed Titan sub have been revealed at the inquiry into its implosion

OceanGate ex-employee reveals 'first red flag' about safety of submersible as image of doomed Titan sub revealed

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic

Haunting last words from doomed Titan sub revealed as inquiry into OceanGate tragedy begins

Debris from the Titan submersible, recovered from the ocean floor near the wreck of the Titanic, is unloaded from the ship Horizon Arctic at the Canadian Coast Guard pier in St. John's, Newfoundland

Titan sub investigation to hear from 24 expert witnesses after five people died in disaster

Paul-Henri Nargeolet was among five people who died when the Titan submersible imploded

'Terror and anguish' suffered by Titan sub victims in their final moments revealed as family of explorer seek $50m in lawsuit

Five men died on the OceanGate Titan vessel.

Plaque to be laid next to Titanic in honour of Titan submersible victim

OceanGate co-founder Guillermo Söhnlein is pictured with CEO Stockton Rush, who died on the Titan sub

Oceangate co-founder claims he can 'safely' send 1,000 people to Venus

Hamish Harding ignored warnings over the Titan sub.

Brit billionaire 'ignored stark warning over Titan sub' after record-breaking dive gave him 'false sense of security'

The OceanGate submersible has five people on board

Poignant CGI shows how deep doomed Titan descended on it's ill-fated final journey to the Titanic wreck

The Titan sub failed last June

Frightening Titan communication logs between doomed sub and mothership were faked, US investigators say

An illustration depicting Tsub that explorers plan to use

Inside the new $20m submersible heading for the Titanic wreck - one year after Oceangate disaster

Research has revealed a new reason why the Titan Sub may have imploded

Titan submersible may have imploded due to 'micro-buckling', new research suggests