The US has expanded sanctions on Islamic Republic of Iran Shipping Lines (IRISL) and added its chief executive to its blacklist.

The Department of State said IRISL had shipped grain-oriented electrical steel to Hoopad Darya Shipping Agency, another Iranian firm previously sanctioned, prompting authorities to sanction IRISL further.

It also added chief executive Mohammad Reza Modarres Khiabani, as well as others involved in the steel trade.