The III (Third Amendment) Amendment to the Constitution of Pakistan is an amendment to the Constitution of Pakistan went effective on 18 February 1975, under the Government of elected Prime ministerZulfikar Ali Bhutto an amendment to the 1973 Constitution of Pakistan The amendment extend the period of preventive detention, of those who are accused of committing serious cases of treason and espionage against the state of Pakistan, are also under trial by the government of Pakistan. The III Amendment protect against the abuse of government authority in legal procedure, and extended the investigation period from one month to three month.
In clause (4), for the words "one month" twice occurring the words "three months" shall be substituted. In clause (5) for the words and comma "as soon as may be, but not latter than one week", the words "within fifteen days" shall be substituted. In clause (7), in the proviso, after the word "enemy", the commas and words, or "who is acting or attempting to act in a manner prejudicial to the integrity, security of defense of Pakistan or any part thereof or who commits or attempt to commit any act which amounts to an anti-national activity as defined in a Federal Law or is a member of any association which has for its object, or which indulges him, any such anti-national activity" shall be added.