Shoplifters got away with their crimes because of a weapon they brought along.
95.3 FM reports that suspects sprayed security officers with pepper spray and were able to get away.
At least two stores were robbed in this way last week -- a Meijer on Portage Road and a Walmart on Ireland.
A woman apparently sprayed the pepper spray but she was accompanied by several others.
Police are trying to determine if the cases are connected.