Dozens killed at Iraqi checkpoint

Twenty-eight dead in Diyala attack, while another four die in Tikrit car bomb.

Tikrit blast
A parked car rigged with a bomb in Tikrit killed at least four people on Tuesday [Reuters]

US and Iraqi forces have been carrying out an offensive against armed groups there for the past month, saying that al-Qaeda in Iraq has regrouped in the area after being pushed out of other parts of Iraq.

In another attack, a blast in the northern city of Tikrit has killed at least four people and wounded six more.

A police official says the bomb was planted in a car parked on a street used by local government officials going to work.

Source: Al Jazeera, News Agencies