The Speaker of Ghana's parliament has suspended proceedings indefinitely following chaotic scenes in the chamber over a row about which party holds the parliamentary majority.

Last week, it was discovered that four MPs had switched allegiance and would run for different parties in the 7 December general election.

Speaker then declared that their seats were vacant, arguing that the constitution does not allow MPs to defect.

In a finely balanced parliament, that decision - which is being challenged in court - means that the opposition (NDC) has become the majority party.