Chad has declared three days of national mourning after a series of deadly attacks blamed on Boko Haram militants left soldiers dead and others injured in the Lake Chad region.
At least 23 soldiers were killed and 26 wounded on Monday when militants stormed the Barka Tolorom Island military base.
The assault has been described as one of the latest in a string of violent incidents in the troubled border area.
On Wednesday night, President Mahamat Idriss Deby Itno signed a decree ordering the period of mourning, which officially began Thursday.
During the mourning period, flags across the country will fly at half-mast. The government also banned all festive activities, while allowing only religious music and prayers to be broadcast on radio, television, and in places of worship.
The decision came shortly after reports of another attack targeting troops in the same Lake Chad area later on Wednesday, although authorities have not yet confirmed casualty figures.
The Lake Chad basin, which stretches across Chad, Nigeria, Niger, and Cameroon, has remained a hotspot for insurgent activity for years.
Boko Haram and its offshoot, the Islamic State West Africa Province (ISWAP), have continued to carry out repeated attacks in the region, targeting both civilians and security forces.
