NEW DELHI - Iran is open to Indian private companies investing in the development of Chabahar port, its foreign minister said on Friday. “We both, India and Iran, are eager to engage in this. I believe sooner rather than later we will start serious work,” Javad Zarif told reporters in New Delhi, adding that the two countries have an agreement in place. India and Iran had signed a deal in May to develop the Chabahar port in southeast Iran.