Iran Foreign Ministry has summoned the Yemeni chargé d'affaires to protest the fatal shooting of an Iranian diplomat in the Yemeni capital, Sana'a, PressTV reported.
The Foreign Ministry reminded the Yemeni Embassy official that under international rules and regulations, governments are responsible for the security of foreign diplomats.
Tehran also called on Sana'a to immediately investigate the attack and bring to justice those behind it.
On Saturday, the commercial attaché of the Iranian Embassy in Yemen was shot by members of a terrorist group outside the Iranian ambassador's residence in Sana'a.
"Unidentified assailants in a van fired on the diplomat three times as he was leaving the ambassador's residence near a shopping center in Hadda," a Yemeni police source told AFP.
The assailants first tried to kidnap the Iranian diplomat but when they faced resistance, opened fire on him.
The diplomat who was seriously injured succumbed to his wounds at hospital.
Iranian Foreign Ministry Spokeswoman Marzieh Afkham strongly condemned the terrorist attack, saying that Yemeni authorities are investigating the incident.