Iraqi security forces arrested 89 people suspected of planning attacks or other terrorism charges, officials said Monday, DPA reported.
In the northern city of Mosul, 34 suspects were arrested for allegedly being involved in violence against civilians and security forces.
"This group, which belongs to the so-called State of Mosul, is involved in bringing suicide bombers from North Africa and some other Arab states into the country," Interior Minister Jawad al-Bulani told reporters.
"This network is the main financier for all terrorist operations in Iraq," al-Bulani charged, but did not back his claims with hard evidence.
The area in and around Mosul is among the most ethnically diverse and dangerous in Iraq, where insurgents mount near-daily attacks, with much of the violence focused against vulnerable minorities.
In Karbala, 55 suspects - some Islamists and some secular Baathist fighters - were arrested over the past two days for planning attacks against Muslim Shiite pilgrims who are in the city for the annual Ashura ritual, an important day of mourning.