In 2011, following a request submitted by HaMoked under Israel's Freedom of Information Law, the legal advisor for the Judea and Samaria Justice Ministry's office provided a document that described a covert procedure that Israel used to cancel the residency status of 140,000 Palestinian residents of the West Bank who traveled abroad such as students who studied at foreign universities and people who migrated internationally for work.[11] The procedure was used from the 1967 occupation of the West Bank until the Oslo Accords were signed in 1994.[11] Coordinator of Government Activities in the Territories between 1991 and 1995, Daniel Rothschild, said he was not aware of the procedure and that "one may infer that neither were residents of the occupied territories".[11] HaMoked said that "mass withdrawal of residency rights from tens of thousands of West Bank residents, tantamount to permanent exile from their homeland, remains an illegitimate demographic policy and a grave violation of international law."[11] According to organization, the number of Palestinians from the Gaza Strip who lost their residency rights is unknown.[11]