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West Bengal was going to ease its lockdown on 30 June Image caption: West Bengal was going to ease its lockdown on 30 June

The Indian state of West Bengal has extended its lockdown until 31 July to stem the spread of Covid-19 after a spike in infections nationwide.

The lockdown in the eastern state was supposed to expire on 30 June.

But as new infections continue to rise across the country, the Chief Minister of West Bengal, Mamata Banerjee, said it was necessary to keep restrictions in place to "help the entire nation".

Schools, colleges and universities would remain shut as part of the continued curbs, but some relaxations would go ahead, the minister said.

India's infections jumped by almost 16,000 to more than 456,000 on Wednesday, the highest daily rise in the country. The death toll stands at more than 14,000.

There have been 14,728 confirmed cases and 580 deaths in West Bengal.

In the capital Delhi, which reported a record daily increase on Wednesday with 3,788 new cases, soldiers have been deployed to assist medics in treating Covid-19 patients.

Meanwhile, our India correspondent Soutik Biswas has looked into how Asia's biggest slum contained the coronavirus.