positive of paraffin test

Posted by julious mabunay julious mabunay
            A man who have quarrel with his girlfriend thereafter his girlfriend grabbed the car key and enter inside the car and close the car door and gunfire was heard. There and then the man entered the car and brought his girlfriend to the nearest hospital wherein the physician declared the woman dead on arrival. The man alleged that his girlfriend committed suicide. Upon the result of the paraffin test conducted to the man and his dead girlfriend, both of them turn positive on both hands (dorsal). The man enter the car right away upon hearing the gunfire. The car is a Toyota sedan and the aircon was off.
My question is this.
         It is possible that the man became positive also without pulling the trigger?
                                                                                        Julious Mabunay (Philippine National Police)