Child, woman threatened with gun in Sydney

An 11-year-old girl and a 33-year-old woman have been threatened with a gun during an aggravated break and enter in Sydney's west.

Police are seeking three men after an aggravated break and enter in Sydney's west. (AAP)

Police are seeking three men after an aggravated break and enter in Sydney's west.

Shortly after 10pm on Thursday night an 11-year-old girl was approached on the steps of a Whalan home by a male who produced a gun and threatened her as two others stood by, police were told.

The man then allegedly entered the premises and threatened the woman, before he fled with the other men.