Melbourne bank fire attack: Two people in critical conditions, motive not yet known

One person is in a critical condition and another is critical but stable after a man 'set himself alight' at a Melbourne bank on Friday.

Emergency services at the Commonwealth Bank in Melbourne where dozens were injured and two are fighting for their life after a man sets himself alight. Source: AAP

Six people are still in hospital after a 21-year-old man set himself alight at a Commonwealth Bank in Springvale in Melbourne on Friday.

One of those was in a critical condition and another was critical but stable on Saturday morning.

Another was the alleged arsonist under police guard.

Twenty-seven people were injured in the attack, among them were children.

The 21-year-old man brought a container of flammable accelerant and started a fire at 11.30am on Friday.

Black smoke and flames quickly took hold, trapping customers and staff inside before brave passers-by helped them out of the bank through a rear fire exit.

Police have said the motive of the man is still yet to be determined.

With AAP