President John Mahama has held discussions with President Goodluck Jonathan of the Federal Republic of Nigeria, over the completion of work on the West African Gas Pipeline.They also deliberated on how best the two countries can collaborated and tackle the issue of piracy on the coast of West Africa.President Mahama arrived in Nigeria on Friday, and was met at the airport by the Nigerian Minister of State for Foreign Affairs and other senior government officials.The two leaders also held bilateral discussions on other issues of interest to the two the nations.