Police are investigating a robbery at Noarlunga Centre that occurred this afternoon.

Just after 1.30pm today (Tuesday 27 August), police were called to the Colonnades shopping centre after reports that a man had stolen a pair of sunglasses from a sunglass store and threatened security guards with a knife. No one was injured.

He fled the scene and ran south through the grounds of a nearby high school.

No one was confronted by the man at the school.

Police are following positive lines of enquiry and anyone who witnessed the incident is asked to call Crime Stoppers on 1800 333 000, or online at www.crimestopperssa.com.au