Aba Island is an island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

 on the White Nile

White Nile

The White Nile is a river of Africa, one of the two main tributaries of the Nile from Egypt, the other being the Blue Nile. In the strict meaning, "White Nile" refers to the river formed at Lake No at the confluence of the Bahr al Jabal and Bahr el Ghazal rivers...

 to the south of Khartoum

Khartoum

Khartoum is the capital and largest city of Sudan and of Khartoum State. It is located at the confluence of the White Nile flowing north from Lake Victoria, and the Blue Nile flowing west from Ethiopia. The location where the two Niles meet is known as "al-Mogran"...

, Sudan

Sudan

Sudan , officially the Republic of the Sudan , is a country in North Africa, sometimes considered part of the Middle East politically. It is bordered by Egypt to the north, the Red Sea to the northeast, Eritrea and Ethiopia to the east, South Sudan to the south, the Central African Republic to the...

. It is the original home of the Mahdi

Mahdi

In Islamic eschatology, the Mahdi is the prophesied redeemer of Islam who will stay on Earth for seven, nine or nineteen years- before the Day of Judgment and, alongside Jesus, will rid the world of wrongdoing, injustice and tyranny.In Shia Islam, the belief in the Mahdi is a "central religious...

 in Sudan and the spiritual base of the Umma Party. Responding to a 1970 Ansar

Ansar (Sudan)

The Ansar , or followers of the Mahdi, is a Sufi religious movement in the Sudan whose followers are disciples of Muhammad Ahmad , the self-proclaimed Mahdi....

 protest against his newly established government in Khartoum, Gaafar Nimeiry

Gaafar Nimeiry

Gaafar Muhammad an-Nimeiry was the Nubian President of Sudan from 1969 to 1985...

 attacked the island with the help of Egyptian fighter-bombers, allegedly directed by Hosni Mubarak

Hosni Mubarak

Muhammad Hosni Sayyid Mubarak is a former Egyptian politician and military commander. He served as the fourth President of Egypt from 1981 to 2011....

who was then a young air force chief. About 12,000 Ansar were killed in the assault including the uncle of Sadiq al-Mahdi and the extensive holdings and property of the Mahdi family were sequestered by the state.