Iran's Revolutionary Guards said that 12 people were arrested for reportedly collaborating with Israel and "planning acts against Iran's security."
"As the Zionist regime (Israel) and their Western backers, most notably the United States, have not succeeded in their sinister goals against the people of Gaza and Lebanon, they are now seeking to spread the crisis to Iran with a series of actions planned against our country's security," the statement said.
Tensions in the Middle East have shot up since thousands of pagers and walkie-talkies used by Lebanon's Hezbollah members exploded in an attack widely blamed on Israel. Hezbollah and Israel have exchanged some of the heaviest cross-border fire in a conflict running in parallel to the almost year-long Gaza war.
The Revolutionary Guards added that members of the network of 12 operatives were arrested in six different Iranian provinces, but did not say when.
In late July, the political leader of Palestinian group Hamas, Ismail Haniyeh, was killed in Tehran in an assassination blamed on Israel by Iranian authorities. Israel has made no claim of responsibility. Since then, tensions in the region have notably increased, with the the threat of a full-scale regional war looming.
Hopes grew on Friday for peace between Iran and the US after President Donald Trump said a deal could be signed as soon as this weekend, even as Tehran said it had not made a final decision on a pact.
Ukraine and Russia exchanged overnight drone strikes into early Friday, with Ukraine targeting a major oil processing and petrochemical region while Russia attacked railway stations and electrical substations.
Authorities in Afghanistan's western city of Herat arrested at least 30 women, accusing them of violating dress rules imposed by the Taliban government, the UN agency for women's rights said, but added that some were later released.
US President Donald Trump called off plans for renewed military strikes on Iran at the last minute on Thursday, saying negotiations with Tehran had advanced to the highest levels of Iran's leadership and had been approved by a broad coalition of regional powers.
The UAE has launched a humanitarian initiative called 'Step of Hope' to provide prosthetic limbs for Palestinians who have suffered amputations during the ongoing conflict in the Gaza Strip.