UPDATE: A 19-year-old man reported missing from South Brisbane yesterday has been located safe and well.

Earlier: Police are appealing for public assistance to help locate a 19-year-old man reported missing from South Brisbane today.

The man was last seen on the Southbank boardwalk at around 10am this morning and has not contacted friends or family since.

Police hold concerns for his welfare as this behaviour is out of character.

Anyone with information about his location is urged to contact police.

If you have information for police, contact Policelink by providing information using the online suspicious activity form 24hrs per day at www.police.qld.gov.au/reporting.

You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, via crimestoppersqld.com.au 24hrs per day.

Quote this reference number: QP1900977416 within the online suspicious activity form.