DUBAI, Sept 7 (Reuters) - Saudi Arabia's Emaar the Economic City said on Wednesday that an affiliate had obtained a 2.7 billion riyal ($720 million) Islamic loan from banks to finance the second phase of building King Abdullah Port.

Ports Development Co secured a murabaha facility from Arab National Bank and Saudi British Bank with a tenor of 14 years, Emaar said in a bourse statement. The loan is backed by collateral, including the port's plot of land.

Emaar is developing King Abdullah Economic City, a massive business zone on the Red Sea coast near Jeddah. A source familiar with the matter told Reuters last week that the Public Investment Fund, Saudi Arabia's top sovereign wealth fund, was negotiating to buy a stake in the project in order to accelerate its development.

(Reporting by Hadeel Al Sayegh; Editing by Andrew Torchia) ((Hadeel.AlSayegh@thomsonreuters.com; +971566883310;))