Police hope public information will help them piece together what sparked a terrifying Brisbane home invasion that saw a couple doused in petrol.

Police are hunting four men who burst into a Brisbane home in the dead of night, doused a couple in petrol and threatened to set them on fire.

Officers have appealed for public information as they try to find those responsible for the chilling crime, which targeted a couple, aged in their 60s, as they slept.

The four intruders were wearing balaclavas and armed with a knife and a machete when they smashed in the front door of the house at Wooloowin at 2.30am on Sunday.

They doused a woman, 64, and a man, 63, in petrol and said they’d be burned unless they handed over jewellery and money. The woman was also struck in the face.

A man, aged in his 20s, was also home but wasn’t hurt.

Police say the attack has left the couple very shaken.

“We are certainly appealing for any information from members of the public that will help us piece all of this puzzle together,” Inspector Rob Graham says.

It’s believed the offenders fled the house in two vehicles, but only one, a silver coloured sport utility vehicle, was spotted.