African Barrick Gold Plc was sued over the deaths and injuries of Tanzanian villagers including one incident where five men were shot and killed at the North Mara gold mine in May 2011. At least 12 villagers filed a lawsuit in London accusing the company and North Mara Gold Mine Ltd. of using excessive force to protect the mine, according to law firm Leigh Day & Co., which represents the group. The company operates four mines in Tanzania.