Chad has accused neighbouring Sudan of carrying out an air strike that hit a military convoy in its ​territory last week, and has raised its alert level in ‌the area to its highest point, a security source said. Sudan said on Thursday it was surprised its army had been blamed for the attack without an independent investigation, ​and that its forces were working to protect its sovereignty. The accusation ​comes against the backdrop of a more than three-year-long civil ⁠war between Sudan’s army and Rapid Support Forces paramilitaries. U.N. experts say ​Chad has been used as a route to supply crucial weapons from the ​United Arab Emirates to the Rapid Support Forces. The UAE and Chad deny those allegations. Chad said on Saturday Sudanese Armed Forces aircraft and drones pursued and bombed a military ​convoy inside its borders on Thursday last week. Chad’s army said the ​strikes took place more than 100 km (62 miles) inside its territory in the eastern Ennedi ‌region, ⁠and that there were no Chadian casualties. Sudan’s foreign ministry said its forces “are carrying out their constitutional duty to protect Sudan’s sovereignty, security, and safety and to face any threats it faces, while respecting the sovereignty of its ​neighbours and without ​targeting their territory”.

Full report : Chad accuses Sudan of cross-border strike, raises alert level.