The estimated death toll from the clashes already stands at more than 300, a village head and volunteers say.
"So far we have picked 150 bodies from the wells. But 60 more people are still missing,'' Umar Baza, head of Kuru Karama village near the city of Jos, said today.
"We took an inventory of the displaced people from this village, sheltering in three camps, and we realise that 60 people can still not be accounted for,'' he added.
Head of the Muslim volunteer team in the village, Mohammed Shittu, said further searches would be carried out today.
"Now we have 150 bodies in all, taken from the wells as from Thursday. We are still going back there today to comb the bush around the village to search for more bodies,'' he also said.
"We believe there are more bodies in the wells but the degree of their decomposition makes it difficult to continue the retrieval operation. We have therefore decided to sand-fill all the wells,'' Baza said.
The state government has given no official death toll for the violence, which broke out last Sunday in Jos, capital of Plateau State and later spread to nearby towns and villages.
Religious leaders and medical workers said they had counted about 300 bodies by Wednesday.
Global rights watchdog Human Rights Watch (HRW) today urged Vice President Goodluck Jonathan to order "an immediate criminal investigation into credible reports of a massacre of at least 150 Muslim residents of a town in central Nigeria''.
HRW said in a statement received in Lagos that witnesses said groups of armed men - believed to be Christians - attacked the largely Muslim population of Kuru Karama on Tuesday morning.
"After surrounding the town, they hunted down and attacked Muslim residents, some of whom had sought refuge in homes and a local mosque, killing many as they tried to flee and burning many others alive,'' the statement said.