[2][3] Oveissi's family from his father's lineage goes back to Shah Qara Yusuf Muhammad, the ruler of the Ghara Ghoyonlu dynasty (Black Sheep Turkomans) and descends through Uzun Hassan.

[4][5][6] He is a direct descendant of Eskandar Beik Torkaman, the minister, head of army (Iraq campaign) and personal advisor to Shah Abbas the Great.

Oveissi sought permission from Reza Shah to be stationed at Khuzestan instead where the government was involved in battle with rebel groups.

The same year, Oveissi travelled to NYC where he met with U.S. intelligence officials, who then concluded that a war between Iran and Iraq was imminent.

[11] In the immediate aftermath of the revolution, Ayatollah Sadegh Khalkhali, a religious judge and then chairman of the Islamic Revolutionary Court, informed the press that the death sentence was passed on the members of the Pahlavi family and former Shah officials, including Oveissi.

[11] Oveissi was shot dead, along with his brother, Gholam Hossein, on 7 February 1984 in Paris, Rue de Passy.

[12] His death was considered by many as the blow that dealt the most setback to opposition groups poised to overthrow the revolutionary regime in Tehran.

Two days before his assassination he was expected to fly back to the border of Iran to lead a counter revolutionary army of officers and men from elite divisions of the late Shah's military that was quartered in 22 makeshift barracks in eight Turkish villages and at five clandestine bases inside Iran.

Since Oveissi had strong ties and the support of powerful members of the clergy including Grand Ayatollahs Mohammad Kazem Shariatmadari and Abu al-Qasim al-Khoei[citation needed] his elimination was priority number one for the newly established revolutionary government.