– Charred bodies, throats cut –
Islamist fighters riding in armoured trucks and on motorcycles stormed Gamboru Ngala after midday on Monday.
The extremists overran the town, making it too dangerous for locals to immediately return, survivors said.
When the militants left, residents discovered their town “littered” with dead bodies, Musa Abba, a witness, told AFP.
“All economic and business centres have been burnt. The market in the town which attracts traders from all over the area… has been completely burnt,” the senator said.
Gamboru Ngala has been attacked repeatedly in the past but Abba said “this (was) the worst Boko Haram attack (the town) has seen”.
The Cameroonian military has reinforced security in the town of Fotokol on the Nigerian border, a medical official told AFP by phone, requesting anonymity.
“The toll is very heavy. We believe there are more than 200 dead,” the source said, adding that 2,000 Nigerians, including soldiers had fled to Cameroon.
“Some of the bodies were charred. It was horrific. People had their throats slit, others were shot,” the source added.
In a fresh attack, suspected Boko Haram militants Wednesday killed seven people in Buji-Buji, also in Borno state, the village head, Mohammed Garba told journalists.
“Gunmen numbering about 20 invaded our village around 3:00 am (0200 GMT) while most people were sleeping… The gunmen opened fire on people as they attempted to escape from the ravaging fire.
“Seven persons died on the spot, while so many others were injured,” he said.