Port Douglas police are appealing for the public's help solving two crimes which occurred in the region late last week.

Authorities are seeking further information regarding a Caucasian man, believed to be in his 50s, who left Cornett's IGA with items taken from the supermarket's shelves.

The man entered the store on Saturday, March 22 at around 10:20am empty handed and is seen on on security camera footage wearing thongs, shorts and a horizontally striped shirt.

The man then presented to the front counter, requesting a refund for the items he had just collected.

Sergeant Damian Meadows said the suspect then fled without paying the goods. 

"After being advised by senior staff that a refund was not possible without the purchase receipt the suspect left the premises in possession of the property," he said. 

Restaurant robbery

Authorities are also seeking further information regarding alcohol theft from a Port Douglas eatery last week.

Entry was gained to Lure restaraunt by smashing a small window with a length of timber to allow the offender to reach through into the bar area. 

More than $100 worth of alcohol was taken from the premises between 9pm on Thursday, March 20 and 7am on Friday.

Anyone with futher information is asked to contact Port Douglas Police on 4087 1999 or Crimestoppers on 1800 333 000.