At least 13 people were killed and 28 others wounded in a series of attacks Tuesday on the security forces and Shiites in Iraq, police spokesmen told Efe.

A car bombing in Al-Mada'in, a town located 30 kilometers (18 miles) south of Baghdad, killed at least five Shiites and wounded 15 others near a mosque.

The bomb was detonated as Shiite worshippers emerged from the mosque after noon prayers.

Another car bomb exploded as a police convoy passed through Al-Riyadh, a town in Kirkuk province some 250 kilometers (155 miles) north of Baghdad, killing at least three officers and wounding four others.

Two members of a Salvation Council, one of the Sunni pro-government militias, died when a roadside bomb shattered their vehicle south of Al Dur, a town in Salaheddin province some 170 kilometers (105 miles) north of the capital.

Another bomb exploded in the same area a few minutes later, killing one person and wounding two others who had approached the scene of the first blast.

At least one soldier was killed and four others wounded near Al Dur by a roadside bomb that was detonated as a military vehicle drove past.

A police officer was killed and three others were wounded by a roadside bomb in Ramadi, the capital of the western province of Al Anbar.

Prime Minister Nuri al-Maliki on Sunday ordered a wide-ranging security operation in Iraq's western and northern regions to find and capture terrorists.

The past few months have been the bloodiest in five years in Iraq, with about 1,000 people dying in violent incidents in July alone. EFE