Story highlights Dozens more victims have succumbed to their injuries

Attack was claimed by ISIS, in part of a wave of terror attacks launched during Ramadan

(CNN) The death toll from a devastating ISIS truck bomb in Baghdad has risen to 292 after dozens more of the wounded succumbed to their injuries, Iraqi officials said Thursday.

A further 200 people were injured in the attack, according to Ahmed Al-Redaini, spokesman for the Iraqi Ministry of Health.

Among the injured are dozens of burn victims who are being transferred outside the country for treatment, said Mohammad al-Rubaee, deputy head of the security committee for Baghdad province.

A statement from the country's health ministry said DNA testing was being carried out to help identify the remains of 177 victims, so they could be returned to their families. The bodies of 115 victims have been returned to their loved ones so far, the statement said.

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The immense blast in Baghdad's bustling Karrada neighborhood , a predominantly Shia district, in the early hours of Sunday was the worst attack to strike the Iraqi capital in years.