However , when he declared himself the universal monarch of the country in 802 A.D. , he did so not at Hariharalaya , but at Mahendraparvata on the Phnom Kulen Plateau .
For at least part of this time , he established his capital at Hariharalaya .
When he declared himself the universal monarch of the country in 802 A.D. , he did so not at Hariharalaya , but at Mahendraparvata on the Phnom Kulen Plateau .
For at least part of this time , he established his capital at Hariharalaya .