Australian bank closes after man sets fire to it

26 people were hurt this morning - some critically, after the man set fire to the Commonwealth Bank branch in the Melbourne - a suburb of Springvale - with flammable liquid. 

Some reports suggest the man doused himself with the accelerant and went up in flames, although this was not confirmed.

Inspector Jacqui Poida said the motive was not clear and it is too early to tell if it was terror related.

"He had some sort of accelerant with him. A container, not sure what he had. And somehow that accelerant was lit inside the bank," he said. 

Paramedics said six of those injured were in a critical condition. One is believed to be the suspect, who is under police guard in hospital. 

Fire crews were quickly on the scene with Country Fire Authority official Paul Carrigg saying the doors to the bank were shut when they arrived.

"The fire was inside the building. So they entered with breathing apparatus and hoselines. They rescued 25 people, with a range of injuries from minor burns and serious injuries," he said.

"You can look inside the bank, it's very black. There would have been a lot of flames to start with and a lot of smoke."

He added that "we understand that there's been an explosion in the bank".

Witness Ashley Atkin-Fone, hailed a hero after running into the bank to help, said he heard "a big blast" and children screaming.

Atkin-Fone grabbed a fire extinguisher from a nearby shop and ran into the bank to try and put out the flames, saying: "What do you do? Instincts just kicked in."

Another witness Ernie Gonzalez said bank tellers had to run through the flames to get out of the building.

"I could see flames in the entrance and I could see people running out covered in charcoal," he said.