ST. PAUL (AP) - St. Paul police are investigating three robberies of people delivering food to the same North End address.

Police say three men threatened a Domino's worker with a gun before stealing pizzas and $15 as he was returning to his vehicle Friday.

Police say a Pizza Hut employee was knocked unconscious Saturday night while delivering to the same address. They say he discovered his pizzas and $15 were missing when he woke up.

Police say a China One deliveryman was approached by three men and threatened with a gun Sunday while delivering to the St. Paul home. They say the men took off with two food orders.

St. Paul police are still trying to determine whether the robbers are connected to the address that the delivery workers were called to. No arrests have been made.