The Globe and Mail reports in its Wednesday edition police have killed more villagers in clashes at a Tanzanian gold mine owned by African Barrick Gold despite the company's pledges to reduce the violence, researchers say. The Globe's Geoffrey York writes the researchers, including a law firm and two civil society groups, say they have received reports that as many as 10 people have been killed this year as a result of "excessive force" by police and security guards at the North Mara mine. A spokesman for African Barrick confirmed to The Globe that "fatalities" have occurred in clashes at the mine site this year, but declined to estimate how many. It is up to the Tanzanian police to release the information, he said. Tanzanian police have repeatedly refused to give any details on fatalities at the site. The deadly clashes occur when villagers walk into the mine site in search of waste rock, from which small bits of gold can be extracted. Hundreds or even thousands of "intruders," as they are known locally, can be involved. Barrick has signed agreements with Tanzanian police to help provide security at the site. However, villagers say the police routinely accept bribes in exchange for access to the site.