Indian Olympic contingent officials stepped in to scotch speculation about the health of Deepak Thakur saying the hockey star, who was admitted to the hospital with chest pain, is stable now.

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Deputy Chef-de-mission Harish Sharma said, according to specialists treating the player, the cause of pain appeared to be muscular in nature.

"Thakur sustained an acute pain immediately after India's hockey match against New Zealand. As such, Thakur was admitted in the ICU of Adkaipioo Voulaj Hospital for investigation and treatment of the chest pain," Sharma said in a statement.

"Repeated electrocardiogram have shown no abnormality in the ECG tracings. Repeated cardiac enzyme studies are normal. The echocardiograph is also normal," he said.

Thakur has been shifted out of the Intensive Care Unit of the Games Village hospital but will be under observation for another 72 hours.

He collapsed after the match against New Zealand and was rushed to the hospital with an oxygen mask.

Earlier report: Deepak Thakur in ICU