Passengers are missing after two boats collided and one of them capsized in north-eastern India.

At least 100 people were on board the boats when they crashed in Assam state, a local official told the BBC.

Many swam to shore, but local news channel NDTV reports that one woman died and around 20 people are missing.

The capsized boat was coming from Jorhat when it crashed into the boat coming in the opposite direction on the Brahmaputra river.

The incident happened around 16:30 (11:00 GMT), local media report.

Prime Minister Narendra Modi tweeted that "all possible efforts are being made to rescue the passengers".

Videos uploaded to social media show the boat capsizing after the crash, as some people try to cling on while others jump into the water.