India has said it is exploring all legal options after a court in Qatar sentenced eight former Indian naval officers to death on unspecified charges.
Reports say the men, who worked with a private company in Qatar, were arrested last year on suspicion of spying.
Neither Qatar nor India have revealed the specific charges against them.
On Thursday, the Indian government said it was "deeply shocked" and would take up the verdict with Qatari authorities.
India's foreign ministry said in a statement that it was awaiting the detailed judgment and attached "high importance to this case".
"We are in touch with the family members and the legal team, and we are exploring all legal options," the ministry said, adding that it would not make further comment right now because of the "confidential nature of proceedings of this case".