A forensic investigator walks past one of the crime scenes, outside of the village of Dubona, near the town of Mladenovac, about 60 kilometres south of Serbia's capital Belgrade, on May 5.ANDREJ ISAKOVIC/AFP/Getty Images A gunman apparently shooting at random killed eight people and wounded 14 in three Serbian villages, authorities said, shaking a nation still in the throes of grief over a mass shooting a day earlier. Police arrested a suspect Friday after an all-night manhunt. Serbian President Aleksandar Vucic called Thursday’s shooting an attack on the whole nation – and said the person arrested wore a T-shirt with...