India, Sept. 18 -- Police in Nigeria fired tear gas at dozens of people who gathered Friday to protest the deaths of 37 miners while they were in custody.

Niger State Governor Mohammed Umaru Bago said on Thursday that the miners, who were arrested earlier in the week on suspicion of illegal mining by the Nigeria Security and Civil Defence Corps, died in custody. The civil defence corps said they died as a result of a suspected disease outbreak, but survivors told The Associated Press that the miners died of suffocation.

Dozens of young people, including miners and their relatives, gathered near the civil defence corps' office on Friday. Police officers cordoned off the area and attempted to disperse protesters by firing tear gas caniste...