Story highlights Interior Minister Mohammed Salem al-Ghabban cites security failures as reason

Analyst: Push to retake Mosul could be delayed while government shores up security

(CNN) Iraq's interior minister resigned Tuesday in the wake of a devastating ISIS truck bomb that ripped through a busy commercial district in central Baghdad, the worst attack to strike the Iraqi capital in years.

Mohammed Salem al-Ghabban submitted his resignation at a press conference Tuesday in Baghdad, citing a lack of "coordination among security systems" as the reason for his departure.

Mohammed Salem al-Ghabban resigned in fallout from the blast.

His resignation was predictable fallout from the immense blast early Sunday in the capital's Karrada neighborhood , where about 250 people were killed and at least 200 injured.

As grieving families buried victims Tuesday, Iraq's government scrambled to mollify public anger over what was seen as a critical failure of the country's security services.

In an embarrassing admission, the government has had to order security personnel to stop using bogus bomb detectors that, for years, have been widely known to be useless.