An army officer who requested anonymity spoke of "around 30 deaths," basing the figure on witness accounts
The violence broke out in the district of Koumogo on Monday, causing the death of three herders and eight farmers
The state of emergency will run for three months in Sila and Ouaddai regions
Officials say a number of people were also injured, but have not released figures
Access to social media was cut in March 2018, as public opposition mounted over Deby's plans to push through changes to the constitution
Security sources said the seven Chadian soldiers and the guard were killed in an ambush on Friday in Mbomouga in Chad's Ngouboua area
The sale is being jointly run by U.S. bank, Morgan Stanley and French bank Natixis.
An Agro-Bootcamp in Benin aims to teach basic, traditional ways of agriculture in order to push a self-sufficient Africa.
The defendants, all Chadians, were found guilty of "a mercenary attempt to assist a coup d'etat"
Deby said Tuesday he was concerned about tit-for-tat violence in the escalating conflict between herders and farmers