Titanic sub search: more rescue equipment arrives amid fears for oxygen levels in Titan – live updates

Search for missing Titan submersible enters fourth day, with more deep-sea vehicles sent to site as part of international rescue operation. Follow the latest news

• Full report: rescuers intensify search amid concerns over Titan’s remaining oxygen supply

Hello and welcome to the Guardian’s live coverage of the search for the submersible vessel Titan that went missing during a voyage to the wreck of the Titanic with five people onboard.

The search for the OceanGate Expeditions tourist submersible is entering its fourth day after the vessel was reported overdue on Sunday evening about 435 miles south of St John’s, Newfoundland.