At least 14 people have been killed and scores have been wounded in two bomb attacks in Iraq.

It is understood at least nine people were killed in a car bombing at a US-Iraqi military base in the Iraqi city of Ramadi.

As many as 50 others were wounded in the blast at a police training base 140 miles west of Baghdad. 

In a separate attack, a suicide bomber blew up his vehicle near a checkpoint manned by Iraqi National Guards north of the capital. At least five people were killed in the attack.

Six guards were also wounded when the bomb exploded in the village of Ishaqi, near the city of Samarra.

Earlier, US forces said they seized a senior militant associated with Abu Musab al-Zarqawi during a raid on Fallujah.

The military says it captured the man, who has not been named, along with five others in the pre-dawn raid.