UNITA carried out several attacks against civilians in May 2001 in a show of strength. UNITA militants attacked Caxito on 7 May, killing 100 people and kidnapping 60 children and two adults. UNITA then attacked Baia-do-Cuio, followed by an attack on Golungo Alto, a city east of Luanda, a few days later. The militants advanced on Golungo Alto at 2:00 pm on 21 May, staying until 9:00 pm on 22 May when the Angolan military retook the town. They looted local businesses, taking food and alcoholic beverages before singing drunkenly in the streets. More than 700 villagers trekked from Golungo Alto to Ndalatando, the provincial capital of Cuanza Norte, without injury. According to an aid official in Ndalatando, the Angolan military prohibited media coverage of the incident, so the details of the attack are unknown. Joffre Justino, UNITA's spokesman in Portugal, said UNITA only attacked Gungo Alto to demonstrate the government's military inferiority and the need to cut a deal. Four days later UNITA released the children to a Catholic mission in Camabatela, a city from where UNITA kidnapped them. The national organization said the abduction violated their policy towards the treatment of civilians. In a letter to the bishops of Angola, Jonas Savimbi asked the Catholic Church to act as an intermediary between UNITA and the government in negotiations. The attacks took their toll on Angola's economy. At the end of May 2001, De Beers, the international diamond mining company, suspended its operations in Angola, ostensibly on the grounds that negotiations with the national government reached an impasse.