Amnesty International has urged the IEBC, the DPP and the EACC to investigate alleged electoral offences ahead of Thursday's Ol Kalou by-election. The rights group cites claims of voter bribery, violence and misuse of public resources, and wants those responsible prosecuted to safeguard the poll's credibility. Amnesty says Kenyans have a constitutional right to elections that are free, fair, and credible.