The police in east Australia are seeking information on a missing Singapore man.

"Police are seeking public assistance to help locate a Singaporean national who may be in the Brisbane city area," Queensland police said in a press release on Wednesday (Jan 18).

Mr Norsyafiq Norman, 23, was last seen at a hotel on Ann Street on Tuesday afternoon.

He did not turn up for his departing flight on Tuesday night, and has not contacted his family, the release said.

Singapore Airlines (SIA) has confirmed that one of its cabin crew is missing, in response to queries from The Straits Times.

An airline spokesman said SIA is working closely with Brisbane authorities to find him, and offering help to his family.

The spokesman said: "We are working closely with the local authorities in Brisbane to locate a member of our cabin crew, who did not report for duty on Jan 17 and we are in contact with the family of the crew to offer assistance."

He is described as "175cm tall and has a slim build and black hair", police said.

Police have asked members of the public to call or use an online form if they have information on the Singaporean.