Lagos, Nigeria (CNN)US elections observers in a fiercely-contested state governor election in Nigeria say they witnessed what appeared to be incidents of voter intimidation and interference in the electoral process.
US 'concerned' about voting irregularities in Nigeria Osun state elections
US Consul General, John Bray was part of a diplomatic mission that observed voting at polling stations in Osun State, south west Nigeria on Thursday.
"The Missions of the United States, European Union and the United Kingdom observed voting at polling stations in Osun today," he said in a local media interview.
"We witnessed what appeared to be incidents of interference and intimidation of voters and heard reports of harassment of party monitors, journalists and domestic observers." Bray added.
"We are very concerned by these reports and will be checking with stakeholders to determine the facts. We call on all stakeholders to remain calm." he added.