State media say missile hit a support ship in a friendly-fire incident, killing at least one sailor and wounding others.

An Iranian missile fired during a training exercise in the Gulf of Oman has struck a support vessel near its target, killing at least one sailor and wounding several others, according to Iranian media. 
The friendly fire incident happened on Sunday near the port of Jask, some 1,270 kilometres (790 miles) southeast of Tehran on the Gulf of Oman, Iranian state TV said on Monday, citing the Iranian navy.
“At least one person was killed, and several were injured,” the broadcaster said.
The missile struck the Konarak, a Hendijan-class support ship, which was taking part in the exercise.
At least a navy sailor has been killed & several injured in a naval accident on a light Iranian vessel in the Gulf of Oman on Sunday
ISNA International (@Isna_Int) May 11, 2020
State television described the incident as an accident, saying the Konarak, which had been putting targets out in the water for other ships to fire on, had stayed too close to a target.
“Iran’s Moudge-class frigate Jamaran accidentally hit the Konarak ship with a missile during the exercise, in which at least one person was killed and 16 people were wounded,” Iran’s semi-official Tasnim news agency reported.
The state-run IRNA news agency said a local hospital had admitted 12 sailors and treated another three with slight wounds
Iran’s army confirmed the death of one sailor, saying in a statement that “investigations” were continuing regarding the cause of the incident.
Iranian media said the Konarak had been overhauled in 2018 and was able to launch sea missiles. The Dutch-made, 47-metre (155-foot) vessel had been in service since 1988. It was not immediately clear how many crew members were on board the warship at the time of the accident.
Turkey’s Anadolu Agency said at least 20 people had been killed and that there were as many as 40 crew members on board the Konarak.
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(@FarsNews_Agency) May 11, 2020
Anadolu said the incident had been deemed “human error”, citing sources in Iran’s Islamic Revolutionary Guards Corps.
Iran regularly holds exercises in the Gulf of Oman, which is closed to the strategic Strait of Hormuz, the narrow mouth of the Gulf, through which 20 percent of the world’s oil passes.
Iranian media rarely report on mishaps during its exercises, signalling the severity of the incident.
The incident also comes at a time of heightened tensions between Iran and the United States. Relations between the two foes have deteriorated sharply since 2018, when US President Donald Trump withdrew his country from a 2015 nuclear deal between major powers and Iran. Washington then re-imposed sanctions on Tehran, crippling its economy.
The animosity deepened in early January, when the US assassinated top Iranian military commander Qassem Soleimani in Baghdad, the capital of Iraq.
Iran retaliated on January 8 by firing missiles at bases in Iraq where US troops were stationed.
On the same day, Iran’s armed forces shot down a Kiev-bound Boeing 737 passenger jet over Tehran, killing all 176 people aboard. The military admitted to the catastrophic error, saying it came as Iran’s air defences were on high alert after firing the barrage of missiles at US targets in Iraq.