Officials in Moscow say Ukrainian forces have struck Russian territory with long-range missiles made by the United States.

The attack comes days after US President Joe Biden reportedly authorized Ukraine to use the weapons.

The Russian defense ministry announced that six ATACMS missiles were fired into the Bryansk region bordering Ukraine on Tuesday. It said five of them were downed, but fragments of the sixth fell on a military facility, causing a fire.

The fire was put out quickly and no casualties were reported.

The Ukrainian military said it had struck an ammunition depot, causing 12 explosions. But it did not specify the type of weapons used.

Local media reported that this was the first time Kyiv has used ATACMS for an attack inside Russia.

Russian foreign minister Sergey Lavrov criticized the US and Ukraine at a news conference in Rio de Janeiro.

Lavrov said, "We will be taking this as a qualitatively new phase of the Western war against Russia and will react accordingly."

The New York Times on Tuesday quoted senior US and Ukrainian government officials as saying Ukrainian forces had carried out the first attack on Russian territory using the US-made missiles.