At least 12 people have been confirmed dead while they were stuck in a massive traffic jam in Indonesia.

The traffic jam was estimated to have been 21 kilometres long and lasted for several days. The cause of deaths is suspected to be exhaustion and dehydration.

The deaths which took place on the island of Java has been attributed to the large numbers of people travelling to their hometowns to celebrate the Eid-ul-Fitr Islamic festival. Similar traffic is expected when many make their way back to the major towns after the holidays.

Most of those who died were elders; however one child also died in what has been attributed to poisoning by exhaust fumes. The country’s health ministry has advised drivers and passengers to rest and take steps to rehydrate on their journey. Indonesia is the most populous Muslim country in the world.

In November 2015, there was a 50 kilometre long traffic jam stretching between the Kenyan capital Nairobi and the port city of Mombasa.