Inmates at a Brazilian prison who had been holding at least 70 people hostage have finally released them after negotiating with police. <br /><br /> The standoff .followed a riot between rival gangs in Feira de Santana jail in the northeast of the country..<br /><br /> Eight people were killed. in violence. The hostages were visiting family members. They included children and a number of elderly people.Inmates freed them in batches over two days.<br /><br /> An investigation is being carried out into what started the riot. The prison houses 1,467 inmates but is only designed to house 644.
