Global talks to develop a landmark treaty to end plastic pollution have once again failed.

The UN negotiations, the sixth round of talks in just under three years, were due to end on Thursday but countries continued to negotiate into the night in the hopes of breaking a deadlock.

There remained a split between a group of more than 100 nations calling for curbs on production of plastic, and oil states pushing for a focus on recycling.

Speaking in the early hours, Cuban delegates said that countries had "missed a historic opportunity but we have to keep going".

The talks were convened in 2022 in response to the mounting scientific evidence of the risks of plastic pollution to human health and the environment.