Two bombs tore through a market full of shoppers in Baghdad today, killing 14 people and wounding more than 100, authorities said, the latest attack in the second-deadliest month since U.S. troops withdrew at the end of last year.

The explosions, timed within minutes of each other, came at midmorning in the open-air market in the mostly Shiite Muslim neighbourhood of Husseiniyah in the northeast part of Baghdad.

The bloodshed highlights the struggle the Iraqi leadership and security forces face in defeating al-Qaeda-linked insurgents hoping to destabilize the government and stoke tensions between Shiite and Sunni Muslim communities. The government itself is deadlocked over sectarian-tinged political conflicts.

Mohammed Hussein al-Jizani said he was haggling with customers in his shoe store in the open-air market, where stalls line the streets, when he heard a loud blast and ran outside.

"Three minutes later, there was a second explosion as people and policemen were rushing to the site of the first bomb," al-Jizani said. "The evil insurgents chose the best time to attack, because the market is usually busy on Fridays with young people gathering to sell and buy birds." There is a pet market nearby.

There was no immediate claim of responsibility.

150 Iraqis killed this month alone

The blasts killed at least 14 people and wounded 106, a medical official said. He spoke on condition of anonymity because he was not authorized to release the information.

More than 150 Iraqis have been killed this month in bombings and shootings that have mostly targeted Shiite Muslims and government security forces. The monthly death toll is the second-highest so far in 2012 and rivaled only by January, when 198 Iraqis were killed in a series of blasts that were widely seen as al-Qaeda seeking to cower the country immediately after the last American troops withdrew in December.

Two other attacks Friday killed four Iraqis.

In the city of Samarra, 100 kilometres north of Baghdad, officials said a bomb exploded in a car parked near the entrance of the Shiite al-Askari shrine, killing one pilgrim and injuring 13 other people.

The shrine was the site of a huge explosion in February 2006 that sheared off its golden dome and immediately ignited fierce sectarian fighting between Sunnis and Shiites across Iraq.

Also, gunmen opened fire on a police checkpoint in western Baghdad, killing three officers, a police official said.

Officials and experts fear the surge in violence may signal Iraq's descent into a failed state, despite billions of dollars in foreign aid and years of security assistance from U.S. troops. While violence is nowhere as widespread as it was just five years ago, when multiple sectarian killings threatened to push the country into civil war, deadly bombings and shootings still happen around the country nearly every day.

The political crisis that has gripped Iraq since the day after U.S. troops left in December has also heightened sectarian tensions and potentially fueled some of the attacks.

'Innocent people are paying the price'

In the latest round of bickering, parliament speaker Osama al-Nujaifi, leader of the Sunni-dominated Iraqiya political coalition, criticized the Shiite-led government for tearing down blast walls protecting the legislature. Al-Nujaifi said he would not send parliament employees back to work until the walls were put back up. That could happen as soon as Saturday.

Al-Nujaifi also said there are enough votes in parliament to oust Prime Minister Nouri al-Maliki, a Shiite, from power even though Iraq's Kurdish president has predicted the effort would fall short. Al-Maliki's critics accuse him of sidelining his political opponents and refusing to share authority.

A police official said most of the police and army members are not qualified to deal with the security challenges and they lack training and equipment. He spoke under condition of anonymity because he was not authorized to comment to reporters.

The official said the problem is not with the number of the security forces, but their quality. He said despite an estimated 60 teams of police on patrol in eastern Baghdad, attacks continue in the area.

"Once again, innocent people are paying the price for the incompetence of our security forces," shoe seller al-Jizani lamented.