(Richmond, IN)--Armed robberies of Richmond businesses have dropped off in recent years, but investigators were working to solve two of them in two consecutive nights.  On Wednesday night, someone used a knife to hold up the Oz Mart on East Main Street.  Then, early Thursday morning, someone robbed the Village Pantry at 11^th and South E Street.  No one was hurt in either robbery.  Police did make an arrest for robbery Thursday, but it’s not known yet if it is in connection with either of the two from Wednesday and Thursday.  41-year-old Amanda Smith was taken into custody at around noon Thursday on Commerce Road in Richmond.