(JNS) The Iranian navy vessel IRIS Kharg caught fire on Wednesday, June 2, and sank in the Gulf of Oman, Iranian media reported.

Military and civilian organizations struggled for 20 hours to extinguish the fire, but their efforts proved futile. All crew safely disembarked and were transferred to the coast, according to the statement.

While Iran has offered no explanation yet as to the cause of the fire, there have been a series of mysterious incidents involving shipping in the area, going back to 2019.

Most recently, in February and March, two Israeli-owned cargo vessels suffered explosions, suspected to have been caused by Iran. In April, in the Red Sea, an Iranian vessel, the MV Saviz, was damaged in what is believed to have been an Israeli attack.