Ratan Tata, former chairman of Tata Sons, is critically ill and in intensive care. 

At 86, Mr. Tata is undergoing routine medical checks due to his age and health concerns.

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A spokesperson for Tata did not provide updates on his condition as of Wednesday. 

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Mr. Tata has reassured everyone through social media that he is in good spirits. 

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Tata Sons still consults him on key decisions despite his limited daily involvement. 

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Mr. Tata played a key role in growing Tata Sons, leading the company from 1991 to 2012. 

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He founded Tata Teleservices in 1996 and took Tata Consultancy Services public in 2004. 

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Ratan Tata continues to serve on international boards like Mitsubishi and JP Morgan Chase. 

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