Company CEO calls ship's return 'a relief,' says crew is safe and will be given recovery period with families

Ship-tracking firm says Stena Impero leaving Iranian waters, heading towards UAE

Unclear when Swedish-owned Stena Impero will set sail from Bandar Abbas port after more than 2 months

Tehran says it's taking final steps to free Stena Impero, whose seizure was seen as a tit-for-tat move after Britain detained Iranian ship off Gibraltar

Swedish owners of vessel say seven mariners set free, another 16 still held by Iranians along with Stena Impero ship