India on Thursday strongly condemned the terrorist attack in Iran's Chabahar where a suicide vehicle bombing followed by an armed assault killed at least two outside police headquarters on Thursday.
Details were sketchy as the situation was still developing.
Chabahar is a free trade zone and the site of an Indian-backed port complex being developed as part of a new transportation corridor for landlocked Afghanistan.
Iranian authorities have not identifed the perpetrator yet.
No militant group immediately claimed responsibility.
The TV station broke into its regular broadcast to report the attack, as such assaults are rare in the Islamic Republic.
The site of a terror attack in Chabahar a port city in Iran's southeastern Sistan-and Baluchestan Province
Chabahar city governor Rahmdel Bameri said many people were also wounded in the 10 am (0630 GMT) attack. He said police officers blocked the vehicle and started firing at the driver, who then detonated his explosives.
Images posted on Twitter purported to show thick smoke rising from the area.
While Iran still complies with the accord, President Donald Trump withdrew the United States over the deal in part due to Tehran's ballistic missile programme, its "malign behaviour" in the Middle East and its support of militant groups like Hezbollah.
Mohammad Pakpur, the commander of the ground forces of Iran's Islamic Revolutionary Guards Corps (IRGC) said the attack had failed.
Iran has stepped up security in border areas after gunmen in September opened fire on a military parade in Iran's southwestern city of Ahvaz, killing 25 people, nearly half of them members of Iran's elite Revolutionary Guards corps.
That attack was claimed by a Sunni Muslim group called, Jundallah, also known as Soldiers of God.