Sri Lanka will use artificial intelligence to monitor bus drivers and make seat belts mandatory on public transport, a government minister said on Wednesday, after the country's worst bus crash in two decades killed 23 people.

A passenger bus has skidded off a cliff in Sri Lanka’s tea-growing hill country, killing 21 people and injuring at least 14 others.

At least 21 passengers killed after bus skids off cliff in Sri Lanka - At least 14 people injured in crash near mountainous Kotmale town