BAGHDAD — Al-Qaida's umbrella group in Iraq claimed responsibility today for coordinated Baghdad bombings this week that killed 127 people and wounded more than 500, warning of more strikes to come against the Iraqi government.

The group, known as the Islamic State of Iraq, said in a statement posted on the Internet that the strikes in the Iraqi capital targeted the "bastions of evil and dens of apostates."

It also warned the group is "determined to uproot the pillars of this government" in Iraq and said "the list of targets has no end." The authenticity of the statement could not be independently verified, but it was posted on a Web site commonly used for militant messaging.

The blasts Tuesday were the third major strike against government sites in the Iraqi capital since August, raising serious questions about the abilities of Iraqi security forces ahead of next's year national elections and the withdrawal of U.S. combat troops.