Several people shot in New York City subway

We get the latest on the shooting in New York where several commuters were shot during the morning rush hour.

The US and Britain say they are looking into reports that chemical weapons have been used by Russian forces attacking the Ukrainian port of Mariupol. Ukraine's Azov regiment said three soldiers were injured by "a poisonous substance" in an attack on Monday. However, no evidence has been presented to confirm the use of chemical weapons. We speak to our specialist disinformation reporter about verifying stories like this.

The UN's World Food Programme says the war in Ukraine could worsen crises in Yemen and Afghanistan. Our correspondent tells us how soaring food and fuel costs, together with budget cuts in some traditional donor countries, have hampered critical fundraising efforts.

In the UK police have issued at least 30 more fines for breaches of lockdown regulations at gatherings in government buildings. We hear the latest, with Prime Minister Boris Johnson and Chancellor Rishi Sunak among those to receive penalties.

(Photo: New York City Police and Fire Department officials on the scene of a reported multiple shooting at a New York City Subway station in the Brooklyn borough of New York, New York, USA, 12 April 2022. Credit: JUSTIN LANE/EPA)