An Iranian warship, the IRIS Dena, was sunk by a U.S. submarine near Sri Lanka in international waters in the Indian Ocean.
New Delhi said the vessel had taken part in naval exercises hosted by India and then departed into international waters on its way back to Iran.
On Wednesday, Sri Lankaâs navy said it responded to a distress signal from the IRIS Dena. When Sri Lankan forces reached the area, they reported no sign of the ship, only oil patches and sailors in the water.
Sri Lankaâs navy recovered 87 bodies and rescued 32 Iranian sailors. The rescued mariners were transported to a hospital in Galle, on Sri Lankaâs southern coast.