Original sentence: In 2004, following the October 17 2004 Zarqawi's pledge of allegiance to Osama bin Laden's al-Qaeda network, the group gradually became known as al-Qaeda in Iraq (official name Tanzim Qaidat al-Jihad fi Bilad al-Rafidayn).Jama'at al-Tawhid wal-Jihad (, Unification (Monotheism) and the Holy Struggle Group)  was a radical Salafi militant group in the Sunni Iraqi insurgency which was led by Abu Musab al-Zarqawi
Edited sentence: In October 17 2004 it was alleged by western media sources that a posting on unnamed Islamist website, that Zarqawi pledged allegiance to Osama bin Laden's al-Qaeda network.It is also alleged that this group became Tanzim Qaidat al-Jihad fi Bilad al-Rafidayn (erroneously known as "al-Qaeda in Iraq").Jama'at al-Tawhid wal-Jihad (, Unification (Monotheism) and the Holy Struggle Group)  is a insurgent group in the Sunni Iraqi insurgency which was believed to have been led by Abu Musab al-Zarqawi