Authorities have arrested three Moroccans and three Mauritanians in this northwest African country on suspicion of terrorism, officials said Thursday. The six men were arrested over the weekend in three Internet cafes in the capital, Nouakchott, said the city's police chief, Mohamed Ould Taleb. He said they are believed to belong to an Algerian group affiliated with al-Qaida. The group, called al-Qaida in the Islamic Maghreb, claimed responsibility for a suicide bombing in Algiers last month that killed 33 people. It has also threatened to target non-Muslim foreigners who it says have exploited the region. "We had very precise information on these people and their activities as related to foreign terrorist groups," Taleb said of those arrested. He declined to give further details.