The United States military says President Donald Trump has directed it to support relief efforts to help Mozambique with the destruction caused by Cyclone Idai more than a week ago.

The U.S. Africa Command statement comes three days after Mozambique's government made a formal request to the international community for aid. The southern Africa nation earlier declared a national disaster as its president said deaths from the cyclone could reach 1,000. Confirmed deaths are now close to 450.

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Survivors of Cyclone Idai in an abandoned and derelict building near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

The United States military says President Donald Trump has directed it to support relief efforts to help Mozambique with the destruction caused by Cyclone Idai more than a week ago.

Survivors of Cyclone Idai in an abandoned and derelict building near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

It says the Combined Joint Task Force - Horn of Africa will lead the U.S. military efforts and that its initial assessments have begun at the scene of the disaster.

Survivors of Cyclone Idai in a makeshift shelter by the roadside near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

Survivors of Cyclone Idai in a makeshift shelter by the roadside near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

A man passes through a section of the road damaged by Cyclone Idai in Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

A man passes through a section of the road damaged by Cyclone Idai in Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

A UN humanitarian helicopter prepares for a day of work, at the airport in the Mozambique city of Beira, Friday March 22 2019.  Some hundreds of people are dead, many more still missing and with many thousands at risk from massive flooding in Mozambique, Malawi and Zimbabwe caused by Cyclone Idai. (AP PhotoCara Anna)

A UN humanitarian helicopter prepares for a day of work, at the airport in the Mozambique city of Beira, Friday March 22 2019. Some hundreds of people are dead, many more still missing and with many thousands at risk from massive flooding in Mozambique, Malawi and Zimbabwe caused by Cyclone Idai. (AP PhotoCara Anna)

The U.S. statement says AFRICOM provides disaster relief "when it has unique capabilities that can be utilized in the U.S. Government's response."

Survivors of Cyclone Idai in an abandoned and derelict building near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

Survivors of Cyclone Idai in an abandoned and derelict building near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

It says the Combined Joint Task Force - Horn of Africa will lead the U.S. military efforts and that its initial assessments have begun at the scene of the disaster.

Survivors of Cyclone Idai in an abandoned and derelict building near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

Survivors of Cyclone Idai in an abandoned and derelict building near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

Survivors of Cyclone Idai in a makeshift shelter by the roadside near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

Survivors of Cyclone Idai in a makeshift shelter by the roadside near Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

A man passes through a section of the road damaged by Cyclone Idai in Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

A man passes through a section of the road damaged by Cyclone Idai in Nhamatanda about 50 kilometres from Beira, in Mozambique, Friday March, 22, 2019. As flood waters began to recede in parts of Mozambique on Friday, fears rose that the death toll could soar as bodies are revealed. (AP PhotoTsvangirayi Mukwazhi)

A UN humanitarian helicopter prepares for a day of work, at the airport in the Mozambique city of Beira, Friday March 22 2019.  Some hundreds of people are dead, many more still missing and with many thousands at risk from massive flooding in Mozambique, Malawi and Zimbabwe caused by Cyclone Idai. (AP PhotoCara Anna)

A UN humanitarian helicopter prepares for a day of work, at the airport in the Mozambique city of Beira, Friday March 22 2019. Some hundreds of people are dead, many more still missing and with many thousands at risk from massive flooding in Mozambique, Malawi and Zimbabwe caused by Cyclone Idai. (AP PhotoCara Anna)