Search for alleged Sydney upskirter

Police are searching for a man who allegedly filmed up a woman's skirt at a railway station in Sydney's inner west.

The man, travelling from Woolooware, got off a train at Redfern station, walked onto the escalators directly behind a woman and began filming up her skirt about 12.30pm on September 7, NSW Police said.

Police are searching for a man they believe may be able to assist with their investigation. He is described as being of Mediterranean/Middle Eastern appearance, about 183cm tall, aged in his 30s or 40s and with short facial hair.