He was admitted to the hospital after he complained of uneasiness and later passed away.
Rejimon (32) is survived by his parents, wife and daughter.
Meanwhile, the District Unit of Kerala Union of Working Journalists alleged that Rejimon died due to negligence on the part of hospital and sought an enquiry into the matter.
The doctor who attended on Rejimon has been suspended, pending a probe, KUWJ District President C Rahim said.