Oslo-listed oil transporter Frontline said on Monday it was cancelling the $4.2 billion merger deal.

"Euronav has determined that Frontline's unilateral action in pursuing the termination of the combination agreement has no basis under (its) terms (...), and that Frontline failed to provide a satisfactory reason for its decision," the Antwerp-based group said in a statement.

Euronav, which provides crude oil shipping and storage services, said it was analysing its options and will take "appropriate action (...), including but not limited to potential litigation and/or arbitration".

"Euronav has complied with its obligations under the combination agreement and has done everything in its power to make this transaction a success," it added.

(Reporting by Juliette Portala, Editing Mark Potter)