He was 70 and leaves behind wife, the sources said.
The actor died as his condition deteriorated and he was being taken to hospital last night.
'Athbhutha Dweep', 'Sooryavanam', 'Itha Innu Muthal' were among the films in which he had donned various characters.
Purushan had also acted in television serials.
Condoling his death Chief Minister Pinarayi Vijayan said in films and television serials, though he essayed small roles, it had entertained viewers.
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