Moorabbin Criminal Investigation Unit detectives are hoping to identify a man following a burglary in Mentone last month.
It is believed an unknown man has gained entry to the underground carpark on Collins Street about 9am on 25 June.
The man forced a roller door and then forced the padlocks open on some storage cages.
He has stolen a suitcase and some other items before leaving on foot.
Investigators have released an image of a man they believe will be able to assist with their enquiries.
Anyone who recognises the man or with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au