Melbourne schoolboy burnt in botched arson received orders on WhatsApp

In short:

A group of young people who allegedly carried out a firebombing at a house in Melbourne's north-west was tasked with targeting the address by middlemen who contacted them using WhatsApp.

One teenager is still fighting for life in hospital after being engulfed in flames when two cars were set alight in Taylors Hill.

What's next?

The ABC understands police will use phone data to investigate the car fire.