Two Picklesburgh vendors reported thefts last night.
One woman said she left a backpack with her cash sales in an unlocked vehicle in the 200 block of the Boulevard of the Allies while she was packing up her stall.
When she returned, the bag was gone.
A second vendor reported an unattended bag with cash and valuables went missing in the 100 block of the Boulevard of the Allies.
Police are checking video from the area to identify a suspect.