Kansanshi is the largest copper producer by output in Zambia and is 20% owned by ZCCM-IH, with the rest owned by First Quantum Minerals Limited.

A statement from the Lusaka stock exchange said the complaint referred to an allegedly unauthorised transfer of money, adding the arbitration proceedings were strictly confidential.

First Quantum and ZCCM-IH could not be immediately contacted for comment.

(Reporting by Chris Mfula; writing by Barbara Lewis; editing by Susan Fenton)