Swedish authorities say a ship used to transport nuclear waste has run aground at a decommissioned nuclear power in southern Sweden.

The Swedish Maritime Administration says M/S Sigrid has no dangerous cargo aboard and was on its way into the harbor outside the now-decommissioned Barseback nuclear plant.

The government agency said in a statement Friday that the cause of the grounding was unclear. There were no reports of leakages from the ship, nor had the hull been damaged.

The two reactors were closed in 1999 and 2005, and the plant is set to be dismantled starting in 2023. All nuclear fuel, which contained most of the radioactive substances, has already been removed, according to the plant's website.