The Nigerian military has exhumed¹ seven fresh corpses² from shallow graves near the city of Jos, in the latest apparent revenge killing³.

尼日利亚军方在乔斯城附近几座浅坟之中挖出了七具新尸体，他们都是最近报复性杀人的受害者。

There are almost daily reports of new attacks

There are almost daily reports of attacks on people in rural villages and of disappearances⁴（消失，失踪） in Jos itself.

The bodies of two local farmers were discovered earlier this week - three other people are still missing.

Clashes between rival communities - Hausa Muslims and Berom Christians⁶ - have left hundreds dead this year.

The BBC's Caroline Duffield in Lagos says tensions were high in Plateau State at the weekend - because a Christian⁵ pastor⁷（牧师） and his wife were abducted⁸ and murdered in the next door state, Bauchi.

On Monday, aid workers found the mutilated bodies of an elderly man and a woman, Berom farmers close to Rim⁹ village, south of Jos.

They had machete（大砍刀，弯刀） wounds and acid burns.

Aid workers photographed a trail of blood - they believe it is that of three more missing villagers.

Now the military has unearthed¹⁰ the remains¹¹ of seven people from shallow graves close to the village of Rahoss.

Our reporter says they are thought to be Hausa Muslim travellers hacked¹² to death in a machete attack.

The killings¹³ are not thought to be directly linked but part of the hostility¹⁴ between local farmers and Hausa Fulani herdsman.

Farmers experience regular attacks and low-level raids and killings from Fulani herdsmen in remote areas.

Outside the city, the violence is about a struggle for farmland, and grazing rights, our reporter says.

But in Jos itself, the friction¹⁵（摩擦） is deeply political, she says.

Violence is often sparked by settlements spilling into（涌进） new land - or by tension in local government.