The foreign ministers of South Korea and Iran discussed the Strait of Hormuz in a phone call on Friday, Seoul said, days after confirming it was weighing a "contribution" to the waterway's security.
US President Donald Trump has repeatedly pressured ally South Korea to help with the Middle East war.
What did South Korea and Iran discuss about the Strait of Hormuz?
South Korean Foreign Minister Cho Hyun spoke by phone with his Iranian counterpart, Abbas Araghchi, at Tehran's request.
The two discussed "the recent situation in the Middle East" and the Strait of Hormuz, the foreign ministry in Seoul said in a statement, without announcing any decision on South Korea's role there.
Why has South Korea faced pressure over the Strait of Hormuz?
Trump has said Seoul rejected his request for assistance in securing the waterway, which is crucial to global oil supplies.
Friday's announcement followed a warning from Tehran earlier this week that any South Korean military contribution to the conflict would have "serious consequences." South Korea sent a fact-finding team to assess the situation in the strait and has repeatedly said it has not decided whether to deploy its military there.
How has the Iran war affected the Strait of Hormuz?
Traffic through the vital shipping route has been virtually paralyzed since the US-Iran war began on February 28, disrupting global energy markets.
Negotiations between Iran and the United States have stalled as the two sides vie for control over Hormuz, which normally carries around a fifth of the world's oil and liquefied natural gas exports.
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