NSW man wanted over disabled woman assault

Police have launched a second appeal to find a man wanted over the night-time sexual assault of an intellectually disabled woman in Sydney's west last year.

The woman, 23, was travelling on a city-bound train in late August when the man tried to strike up a conversation. She disembarked at Yennora Station but was followed by the man who then sexually assaulted her.

CCTV images of the man, described as Caucasian with brown hair and a beard, have been released.