Shafaq News/ Authorities in mid and south Iraq tightened the security measures in the aftermath of the bomb attack in the Sadr City, east of Baghdad, earlier today, Monday.

A source told Shafaq News Agency, "Security authorities in the middle and southern governorates tightened its security measures. The authorities in Karbala and Najaf intensified the scrutiny into the pilgrims flooding into both governorates."

"Security checkpoints were deployed in the streets of al-Diwaniyah. Troops were reinforced in Basra as well."

A roadside bomb attack targeted a Baghdad suburb on Monday, killing at least 27 people and wounding 45 others, Iraqi security source said.

The attack took place in a busy market of Sadr City, the source said. It happened a day before the Eid al-Adha holiday when the market is crowded with shoppers.

“A terror attack using a locally-made IED (improvised explosive device) in Woheilat Market in Sadr City, in east Baghdad, left several victims dead and others injured,” Iraq's Security Media Cell reported.

Women and children were among the dead and some shops burned down as a result of the explosion.

There was no immediate claim of responsibility but the armed group ISIS has claimed similar attacks in the area before.

The source said that the attack was executed by a female suicide bomber wearing an explosive vest.

It was the third time this year that a bomb hit a market in the densely populated neighbourhood. In April, at least four people were killed in a car bomb attack in Sadr City. That blast was caused by an explosive device attached to a parked car at the market.

Prime Minister Mustafa al-Kadhimi placed the commander of the federal police regiment responsible for the area of the marketplace under arrest, according to an Iraqi military statement. It also said an investigation was launched.

Once an almost daily occurrence in Baghdad, large bomb attacks have slowed since ISIS was defeated on the battlefield in 2017.

Attacks persist, however. In January, more than 30 people were killed in a twin suicide bombing in a busy commercial area in central Baghdad. It was the deadliest bombing in three years to strike Iraq’s capital.