Authorities in Bangladesh say more mass graves have been found at a military base where soldiers staged a mutiny this week. At least 80 people are reported to have been killed, mostly army officers.The military says a major general and his wife are among the victims found in one mass grave yesterday and two more discovered today. Bangladesh’s army chief has reaffirmed his support for the new government of Prime Minister Sheikh Hasina, saying democracy will be upheld. The country has suffered several military coups since independence in 1971. The army maintains this week’s mutiny by border guards was over pay and conditions and was not politically motivated. The mutiny was the first serious test of Hasina’s authority. She took office last month after winning elections in December, bringing to an end two years of emergency rule by an army-backed government. The rebellion ended on Thursday when the rebels laid down their arms after an amnesty offer was made.