Iraqi police have detained a Saudi militant found crossing the border into Iraq.

Police said Abdullah Saleh al-Harbi is one of a group of militants that attacked a Saudi oil facility last week. They say al-Harbi claimed to be on his way to the northern Iraqi city of Mosul, where he was to meet al-Qaida contacts.

Iraqi authorities say al-Harbi will be taken to Baghdad for interrogation.

However, Saudi officials have said the kingdom has no information about al-Harbi being a wanted militant.

The arrest comes days after Saudi officials reported killing the leader of al-Qaida forces operating in the kingdom in a firefight.

Al-Qaida's Saudi branch has claimed responsibility for last week's failed attack on the oil facility and has vowed to hit other Saudi oil installations.

Some information for this report was provided by AP and Reuters.