JAKARTA, Apr 27: Australia needs to show proof of alleged corruption in the trial of two Australians on death row before Indonesia’s government will investigate, the foreign ministry said, questioning why concerns were being only raised now instead of 10 years ago.Armanatha Nasir, spokesman for Indonesia’s foreign ministry, said Australian’s Myuran Sukumaran and Andrew Chan have been given all the legal avenues to challenge their death sentences.The two are among nine drug convicts due to be executed by firing squad as early as tomorrow. (agencies)