A Sydney family has escaped injury after fire bombs were thrown at their home during a late‑night attack in the city’s southwest.

Emergency services were called to Gallipoli St in Condell Park just after 10.30pm on Saturday, following reports that glass bottles filled with a flammable liquid — believed to be petrol — had been hurled at the property.

Two bottles smashed against a window but failed to ignite. A third device, found inside a bag at the front of the home, has been seized for forensic testing.

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No one was injured and the house suffered only minor damage.

Police believe the attack was targeted.

A crime scene was established overnight, with specialist officers combing the area for clues.

Moments after the incident, a scooter rider was seen travelling north along Gallipoli St, but no further description has been provided.

Detectives from Bankstown Police Area Command are now appealing for anyone with information — including dashcam or mobile footage from the area — to contact Bankstown Police Station.