A possible resolution to the seizure of the Maersk Tigris by Iran is looking closer as Maersk Line provides a letter of undertaking relating to the original 10-year old cargo case.

Following a statement on Tuesday that it was in dialogue with Iranian courts, Maersk said today: “Today, we have had a constructive dialogue with the Iranian courts and Ports & Maritime Organization. Earlier today, we provided a letter of undertaking in relation to the underlying cargo case.”

The vessel, time chartered to Maersk was seized on 28 April over a 10-year old court case with Iran’s Pars Tala'eyeh Oil Products Co, which on appeal Maersk had been ordered to pay $3.6m in compensation.

Separately the official IRNA news agency quoted Foreign Ministry spokeswoman Marzieh Afkham as telling a news conference:"The negotiations between the private complainant and the other party are going on and possibly the issue will be resolved in a day or two.”

Maersk did not say what it expected to happen next and simply commented: “We are continuing to do everything we can to assist in the safe release of the crew and vessel.”