Samsung has said it is suspending sales of its Galaxy Note 7 smartphones after finding some of the batteries exploded.

Some buyers reported their phones caught fire or exploded while they were charging, and Samsung said it had confirmed 35 such cases, caused by faulty batteries.

Since late last month, several users have posted photos and videos on social media showing the charred Note 7 with part of its 5.7-inch touchscreen burnt and melted, saying it suddenly caught fire.

The president of the firm's mobile business, Koh Dong-jin, said customers who already bought Note 7s will be able to swap them for new smartphones, regardless of the purchasing date.

He said: "We have received several reports of battery explosion on the Note 7 that was officially launched on 19 August, and it has been confirmed that it was a battery cell problem."

He added he was "deeply sorry" over the incident.

The South Korean company said in a statement it would take around two weeks to prepare replacement devices.

The announcement comes just two weeks after Samsung launched its latest flagship smartphone.

The firm said it has sold more than one million Note 7 smartphones in 10 countries so far including South Korea and the US.

Samsung has now delayed the planned release of the Note 7 in several European countries over growing safety concerns.