- The man was detained for not having right immigration documents
- Atul Kumar Babubhai Patel landed in Atlanta on May 10
- He was found to have high blood pressure and diabetes
US Immigration and Customs Enforcement took Mr Patel to custody at the Atlanta City Detention Center for two days. Officials said the preliminary cause of his death is congestive heart failure.
The Immigration department, in a statement, said the US Customs and Border Protection denied Mr Patel entry into the country as he did not possess the necessary immigration documents. He was then transferred to the custody of the Immigration and Customs Enforcement.
At the Atlanta City Detention Center, Mr Patel received an initial medical screening and was found to have high blood pressure and diabetes.
On Saturday, a nurse checking Mr Patel's blood sugar noticed he had a breathing problem following which he was shifted to a hospital where he died.
The immigration department said it is firmly committed to the health and welfare of all those in its custody and is "undertaking a comprehensive agency-wide review of the incident, as it does in all such cases".
The agency has informed the Indian consular representatives who informed Mr Patel's family about his death.
The agency said that deaths in its custody are "exceedingly rare" and occur at a fraction of the rate of the US detained population as a whole.
(With inputs from PTI)