On 6 June 1967, Israeli authorities declared the Gaza Strip a closed military area pursuant to a military order that remained in effect even after the signing of the Oslo Accords. Significantly, Israeli restrictions on the Gaza Strip have begun as early as the 1990s, by means of a series of measures taken by the Israeli authorities, including reducing the fishing zone in Palestinian territorial waters, preventing Palestinian workers from Gaza from working in Israel, and imposing restrictions on the movement of Palestinians through the Erez crossing.