According to the website of the holy shrine’s Astan (custodianship), hundreds of Najaf seminary school’s scholars and students, pilgrims and officials of the holy shrine attended the memorial service on Friday.
On the same day, hundreds of Shias and Sunnis held joint Friday prayers at a mosque in Karradah to demonstrate Islamic unity.
The Friday prayers were led by Sunni scholar Sheikh Khalid al-Mala’a.
The deadly blast in Karradah took place on Sunday when a vehicle packed with explosives was detonated in Karradah area while families were shopping for Eid al-Fitr which marks the end of the holy Muslim fasting month of Ramadan.
In a twitter post, the Daesh Takfiri terrorist group claimed responsibility for the assault.
Iraq's Health Ministry on Thursday said the death toll from the attack has risen to 292.
Iraqi Health Minister Adeela Hammoud told al-Iraqiya TV network that DNA samples were collected from 150 families to identify bodies charred beyond recognition.
The ministry’s Thursday toll makes the Baghdad attack the deadliest since the US invasion of Iraq in 2003.
The death toll rose as some critically-injured people died and more bodies were recovered from the rubble in Karradah.