A May 1980 grenade attack on the Palais du Peuple and a February 1981 bomb explosion at Conakry Airport precipitated two more waves of politically motivated arrests, with hundreds detained and reports of death.[13] People continued to be killed at Boiro through what was known as the "black diet" – a complete lack of food and water.[14][15] The Guinean government also reached agreements with the governments of Liberia and Côte d'Ivoire to forcibly repatriate expatriates involved in opposition activity. Reports of detainment and beatings upon their arrival leaked to the outside world.[16]