Bomb attacks around the Lake Chad region on Saturday resulted in the deaths of 37 people and injury of 52 others.
It is believed that the Boko Haram militant group was responsible for bombings that targeted a busy market and a refugee camp at around 15:00 GMT.
The director general of Chad's gendarmerie, Banyaman Cossingar, stated that the market attack was carried out by a group of female suicide bombers killing 16 people in a fish market in Baga Sola, whilst 22 people were killed in two blasts at a refugee camp outside the city.
According to military sources cited by the Associated Press, five attackers were killed in the bombings.
Boko Haram militants often succeed in infiltrating Chad from Nigeria.
Attacks by the Boko Haram in the region have increased since Nigerian President Muhammadu Buhari took office in May, despite promising to take action against the militant group.
In the past six years, some 17,000 people have been killed by the militant group, while clashes have left around 2.5 million people homeless.