Nigeria, Nov. 15 -- A former Nigerian president, Goodluck Jonathan, on Thursday decried incidents of pre-election violence in Kogi and Bayelsa States ahead of Saturday governorship polls in both states.

Mr Jonathan described the signals from both states as "disturbing", adding that only electronic voting process can address issues of electoral violence in Nigeria.

The former president spoke in Port Harcourt, capital of Rivers State, at the presentation of a book authored by a former deputy governor of the state, Gabriel Toby.

The book, entitled 'In the Cause of Service: Memoir of Gabriel Tamunobiebere George Toby,' was unveiled Thursday.

Lamenting the killing of people in both states ahead of the elections, Mr Jonathan insisted the on...