DUBAI - Bahrain's Oil & Gas Holding Company has hired Gulf International Bank (GIB) and Mashreq to refinance an existing $1.6 billion murabaha facility, GIB said on Tuesday.

"The proposed transaction will have both Islamic and conventional tranches and will be sustainability linked," GIB told Reuters in response to a query.

Oil & Gas Holding and Mashreq did not immediately respond to requests for comment.

(Reporting by Yousef Saba and Saeed Azhar; Editing by David Goodman) ((; +971562166204;