Dozens of people gathered outside the Saudi Consulate in Istanbul on Thursday in a vigil to demand "full justice" for journalist Jamal Khashoggi, killed after entering the building three weeks ago.

Several carried cardboard images of his face and signs reading "Khashoggi's friends." One, his hands painted red, wore a mask depicting the face of Saudi Arabia's de facto ruler, Crown Prince Mohammed bin Salman.

Khashoggi, a Washington Post columnist and critic of the crown prince, disappeared after entering the consulate.