Kota Kinabalu: The High Court here has fixed Sept 23 to hear a bid by senior lawyer Roland Cheng to submit some 500 pages of key colonial era documents proving North Borneo’s continental shelf areas before Malaysia was formed.

Sabah helped to form Malaysia with the Federation of Malaya, Singapore and Sarawak on Sept. 16, 1963 but the colonial government already decreed that North Borneo’s maritime border extended to 200 miles a decade earlier.

Under the Malaysia Agreement, land matters come under the State Government’s jurisdiction. MA63 is an international treaty vested with the United Nations.

Roland Cheng, the legal counsel for the NGO Sabah Action Body Advocating Rights (Sabar) had on Sept. 14, last year, filed an originating summons to challenge the Territorial Sea Act (TSA) 2012, a federal law that limits Sabah’s maritime jurisdiction to only three nautical miles.