"They don't think robbery was a motive. There was some type of an altercation out behind her store. She went out back to find out what was going on, and they believe that's when she was abducted. After the abduction, they went in, they killed the cashier," said Jamie Machus, her father.
This is strange, IF robbery was not the motive, then what was ? The kidnapping of Brenna or the murder of Orlando ? If abduction of Brenna was the motive, why go in and murder Orlando. Of course the precise details of the event are probably not known at the moment, may not of happened like that.
http://http://www.myfoxdetroit.com/story/22853329/dearborn-police-investigating-robbery-homicide-at-family-dollar-store