Police have appealed for information after a Warrawong service station was robbed early this morning.
He was handed cash and ran down an alleyway next to the building.
Officers and a police dog searched the area but did not locate the man.
Police are now appealing for information about a man they believe can assist with investigations.
He is described as being about 183cm tall with a thin to medium build.
At the time he was wearing an orange-hooded jacket, jeans and white joggers.
His face was covered.
Anyone with information about this incident should call Lake Illawarra Police or Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page https://www1.police.nsw.gov.au.