Prime Minister Dr Mahathir Mohamad should take a 'tough line' to demand for the release of Burmese pro-democracy activist Aung San Suu Kyi when he meets with a visiting Burmese envoy next week, said an opposition leader today.

DAP chairperson Lim Kit Siang said Mahathir must call for the immediate and unconditional release of Suu Kyi when Burmese Deputy Foreign Minister Khin Maung Win arrives in Kuala Lumpur on Monday.

"Burmese Prime Minister Than Shwe has sent his top aide, Khin, on a diplomatic offensive in Asean and Asia to appeal for understanding and woo support for the junta's relapse into greater intolerance, intransigence and defiance of international opinion.