Baghdad, Iraq (CNN) -- A militant group claimed responsibility for two car bombings in Baghdad on Sunday, brazen attacks that killed at least 29 people and wounded 111.
The Islamic State of Iraq, an umbrella group that includes al-Qaeda affiliated movements, claimed that they targeted the National Security Department office in Kadhimiya and an office of Asiacell mobile cell phone company in the neighborhood of Mansour.
"Our security details managed to break through the heavy barriers of the apostate army and police that had been placed in the two fortified neighborhoods, and planted two car bombs near the two targets. Thanks God the detonations led to the destruction of the two headquarters with their equipments and in addition to the death of tens of filthy recruits and officers from the National Security office," the statement said on one of the group's websites.
ISI said the phone company was targeted since it has become "an integral part" of government security and was being used against fighters.
Iraq's Interior Ministry confirms that both locations were targeted.
Although violence levels in Iraq have dropped significantly over the past two years, there has been a recent spike in explosions.
The latest violence comes as political uncertainty lingers, more than six months after the country's inconclusive national elections.
Iraqi politicians have been unable to form a government, and officials have expressed concerns that insurgents would take advantage of the political vacuum to try to reignite the sectarian bloodshed that gripped Iraq for years.