India captain Shubman Gill was "under observation" in hospital Sunday after suffering neck pain and will take no further part in the first Test against South Africa.

Top-order batsman Gill felt pain in his neck after scoring a boundary on the second day on Saturday in Kolkata and left the field.

Gill "was taken to the hospital for examination after the end of day's play," said the Board of Control For Cricket in India (BCCI), on Sunday ahead of start of the third day.

"He is currently under observation in the hospital. He will take no further part in the Test match. He will continue to be monitored by the BCCI medical team."

The first match of the two-Test series looks likely to end on day three at Eden Gardens on Sunday, with South Africa to resume at 93-7 in their second innings, a lead of just 63 runs, on tricky batting wicket.

Gill faces a battle to be fit to lead the side in the second Test in Guwahati, which is due to begin in six days' time on November 22.