Palestinian refugee camps are camps set up by the United Nations Relief and Works Agency (UNRWA) in Jordan, Lebanon, Syria, the West Bank and the Gaza Strip to accommodate Palestinian refugees registered with UNRWA, who fled or were expelled during the 1948 Palestinian exodus after the 1948 Arab–Israeli War or in the aftermath of the Six-Day War in 1967, and their patrilineal descendants. There are 68 Palestinian refugee camps, 58 official and 10 unofficial, ten of which were established after the Six-Day War while the others were established in 1948 to 1950s.