Karachi/IBNS: Underworld don Dawood Ibrahim has been hospitalised due to a heath complication in Pakistan's Karachi, media reports said.

Dawood was hospitalised a couple of days ago.

He is kept under tight security inside the hospital.

Only his close family members and two hospital authorities are given the access, India Today report said.

It is speculated that Dawood was poisoned but no official sources have yet confirmed it.

Dawood, who has been designated as a global terrorist, faced multiple charges in India. He has a history of criminal activities.

Dawood, who is the mastermind of 1993 Mumbai serial blasts, is accused of terrorism and drug trafficking.

The Mumbai serial blasts had left over 250 dead and thousands injured.