There are many firsts for police, but surely this traffic stop was more than the officers could bear.

Officers from the Upper Mt Gravatt Tactical Crime Squad stopped a woman at 8.55pm on Sunday night on Newnham Road, Wishart.

Police have found a baby koala in a woman's bag after stopping her at Wishart on November 6. Credit:Queensland Police Service

The 50-year-old East Brisbane woman was arrested on outstanding matters but before being taken to the watch house, she was asked if she had anything to declare.

The woman handed over a zipped green canvas bag, telling officers it contained a baby koala.