NEW : The African Union suspends Guinea-Bissau . NEW : History will show we were right , the junta says . Junta : We are not going to be able to hold elections in a few months. Guinea-Bissau has had several coups since it gained independence in 1974 .
NEW : The African Union suspends Guinea-Bissau . NEW : History will show we were right , the junta says . Junta : The acting president and former prime minister are `` detained for security reasons '' Guinea-Bissau has had several coups since it gained independence in 1974 .