Two suicide bombings killed at least three people and injured 14 in Ngouboua village near Lake Chad, officials said on Sunday.
The first explosion took place near a public water tap and the second near a mill, both are public gathering spots in the village near Lake Chad, toward the border with Nigeria, police spokesman Paul Manga said.
"Among the dead were a girl and a boy. There were 14 injured, of which four are in serious condition and have been transported by helicopter to Ndjamena," Lake Chad local official Dimouya Souapebe said. According to witnesses, the two suicide bombers were women.
According to state television, two civilians were killed and nine wounded, though no reason was immediately available about the discrepancy in the casualty toll.
No one claimed responsible for the suicide attacks, however Boko Haram militants carried out similar attacks in the previous months across Chad.
In October, a man, two women and two children carried out five coordinated suicide bombings, which killed at least 36 people and injured at least 50 others in the western village of Baga Sola near Lake Chad, a site for thousands of refugees who fled the crises from Nigeria, a government source reported.
Boko Haram militants recently renewed the tactic of using young girls and women to carry out suicide bombings in Nigeria, Chad, Cameroon and Niger.
Dozens of young girls and women were involved in carrying out suicide bombings planned by Boko Haram, raising fears it is using abducted victims for the attacks, after Chad pledged to contribute to a regional security operation against the insurgents.
A coalition of four nations, Nigeria, Niger, Chad and Cameroon reportedly pushed back the armed group from captured towns and villages in a military operation, which began in February.
At least 15,000 people have been killed and more than 1.5 million displaced since the conflict with Boko Haram began in 2009.