Samsung Galaxy Note7 owners told to stop using the smartphone.

Samsung has urged all owners of its Galaxy Note7 smartphones to power them down and stop using them.

The electronics company has also stopped production of the device, following reports of replacement devices catching fire.

Samsung said it had asked its global partners “to stop sales and exchanges of Galaxy Note7” while further investigation took place.

In a statement the firm said consumers’ safety remained their top priority.

Samsung’s decision to pull Note7s off shelves for the second time in two months underscores the South Korean company’s struggles to fix its problems.

It had already recalled 2.5 million Note7s due to faulty batteries, but the latest reports of damage on the replacement devices was raising fresh doubts about the firm’s quality control abilities.

More to come.

This post originally appeared on ABC News.