Thirty-two Iranian sailors were rescued on Wednesday from one of its warships that sank off the southern coast of Sri Lanka, with several bodies recovered and more than 100 reported missing, authorities and media reported. An explosion of unknown origin occurred on board before the ship sank, authorities said, the Sri Lankan Daily Mirror newspaper reported. A further 78 people on board the frigate "IRIS Dena" were injured, the paper reported, citing the defence ministry. A search and rescue operation continued on Wednesday, Sri Lankan Navy spokesman Commander Buddhika Sampath said. He said it was not clear how the vessel had sunk. Sampath told a news conference that the Sri Lankan Navy and an aircraft responded to a distress call off the southern coast. Foreign Affairs Minister Vijitha Herath told parliament that 180 sailors were reported to be on the vessel at the time it had sunk. “Keeping with international obligations Sri Lanka sent its rescue teams, though the incident did not take place in the country’s territorial waters,” he said. “We have brought 32 sailors to hospital and