Weatherford police are investigating an attempted robbery Saturday. Police detective Chris Cote says 3 people wearing masks knocked on the door of an apartment in the 600 block of west Oklahoma. An occupant opened the door and the 3 armed subjects entered the residence and pointed weapons at two of the victims inside. The three subjects did not demand anything but had asked for an ounce of marijuana. The subjects looked around the apartment before leaving the residence without taking anything. No injuries occurred during the incident. No arrests have been made.