TEHRAN, Iran — Iran’s president said on Tuesday that Saudi Arabia cannot “cover up” its crime of executing a leading Shiite cleric by severing diplomatic relations with the Islamic Republic, even as the kingdom’s allies began limiting their links to his country.

President Hassan Rouhani’s comments came as Kuwait announced it had recalled its ambassador to Iran over attacks on Saudi diplomatic missions in the Islamic Republic.

The execution last weekend of Sheikh Nimr al-Nimr, a Shiite cleric and opposition figure in Saudi Arabia, has heightened the Saudi-Iran regional rivalry, threatening to derail already shaky peace efforts over the wars in Syria and Yemen.

A statement posted on his official website said Rouhani discussed the current diplomatic dispute with visiting Danish Foreign Minister Kristian Jensen.

“The Saudi government has taken a strange action and cut off its diplomatic relations with the Islamic Republic of Iran to cover its crimes of beheading a religious leader in its country,” Rouhani said. “Undoubtedly, such actions can’t cover up that big crime.”

Iran’s Vice President Mohammad Bagher Nobakht, addressing journalists Tuesday, said the country’s intelligence services were investigating the diplomatic mission attacks and that police officers who failed to take action to stop the assaults would be prosecuted. Iranian police say at least 50 people already have been arrested over the attack.