Russia has denied US claims its planes hit a UN aid convoy near Aleppo, releasing drone footage which it claims shows the trucks were travelling with a rebel vehicle carrying a heavy mortar.

Senior US officials speaking anonymously have said they have evidence that the Monday night attack on a UN and Red Crescent convoy, which killed around 21 people and destroyed aid for thousands, was carried out by two Russian Sukhoi SU-24 jets which were seen above the vehicles within one minute of when they was struck.

The White House said it couldn’t confirm the information, as both the Syrian and Russian air forces use the plane, but intelligence reports suggested it was indeed an attack from the air carried out by Russian planes.

On Tuesday, however, Russia released video from the incident which it says "clearly shows how terrorists are redeploying a pickup with a large-calibre mortar on it using the convoy as a cover." In the footage, the truck can be seen travelling alongside the aid vehicles. The drone moves away before the incident takes place.

The vehicle travelling next to the convoy was reportedly carrying a heavy mortar

A spokesperson from the Russian Foreign Ministry rejected accusations of culpability from the US. “We are considering, with resentment and indignation, attempts by some foreign curators of rebel units and terrorists in Syria to put the blame for the incident on the Russian and Syrian air forces who allegedly bombarded a relief convoy,” a statement given to Russian news agencies said.

The Russian Defence Ministry added it believed the attack did not involve the sort of damage consistent with an air strike, and instead was caused by the presence of field artillery and a subsequent fire. The US government had “no facts” to support the allegations and Russia has “nothing to do with this situation,” a spokesperson added.

In pictures: Aleppo bombing Show all 14 1 /14 In pictures: Aleppo bombing In pictures: Aleppo bombing Bombing in Aleppo Smoke rises after airstrikes on the rebel-held al-Sakhour neighborhood of Aleppo, Syria April 29, 2016. Reuters In pictures: Aleppo bombing Bombing in Aleppo A Syrian family runs for cover amid the rubble of destroyed buildings following a reported air strike on the rebel-held neighbourhood of Al-Qatarji in the northern Syrian city of Aleppo, on April 29, 2016. AFP/Getty Images In pictures: Aleppo bombing Bombing in Aleppo A man reacts as he stands on blood stains at a site hit by airstrikes in the rebel held area of Aleppo's al-Fardous district, Syria, April 29, 2016. Reuters In pictures: Aleppo bombing Bombing in Aleppo The damage of the airstrikes in the rebel-held area of Aleppo on April 28 Reuters In pictures: Aleppo bombing Bombing in Aleppo The damaged the Medecins Sans Frontieres (MSF)-backed al-Quds hospital after it was hit by airstrikes, in a rebel-held area of Syria's Aleppo Reuters In pictures: Aleppo bombing Bombing in Aleppo Syrians evacuate an injured man amid the rubble of destroyed buildings following an air strike on a rebel-held of Aleppo on April 29, 2016. AFP/Getty Images In pictures: Aleppo bombing Bombing in Aleppo People inspect the damage at a site hit by airstrikes, in the rebel-held area of Aleppo's Bustan al-Qasr AP In pictures: Aleppo bombing Bombing in Aleppo A man leads a woman in tears and child out of the scene after airstrikes hit Aleppo AP In pictures: Aleppo bombing Bombing in Aleppo Civil defence members search for survivors after an airstrike at a field hospital in the rebel held area of al-Sukari district of Aleppo Reuters In pictures: Aleppo bombing Bombing in Aleppo A Syrian boy is comforted as he cries next to the body of a relative who died in a reported air strike in the rebel-held neighbourhood of al-Soukour in the northern city of Aleppo Getty Images In pictures: Aleppo bombing Bombing in Aleppo A Syrian family walks amid the rubble of destroyed buildings following a reported air strike in the Bustan al-Qasr rebel-held district of the northern Syrian city of Aleppo Getty Images In pictures: Aleppo bombing Bombing in Aleppo Syrian civil defence volunteers and rescuers remove a baby from under the rubble of a destroyed building following a reported air strike on the rebel-held neighbourhood of al-Kalasa in the northern Syrian city of Aleppo Getty Images In pictures: Aleppo bombing Bombing in Aleppo Syrians help a wounded youth following an air strike on the Fardous rebel held neighbourhood of the northern Syrian city of Aleppo Getty Images In pictures: Aleppo bombing Bombing in Aleppo Syrian civil defence volunteers evacuate people from a damaged building following a reported airstrike in the rebel-held neighbourhood of Tareeq al-Bab in the northern city of Aleppo

Eyewitnesses reported that the attack was an aerial bombardment, which destroyed 18 of 31 trucks and damaged a warehouse and health clinic in the rebel-held town of Uram al-Kubra in Aleppo province.

Local paramedic and media activist Mohammad Rasoul, said the prolonged attack lasted for two hours, and “erased the convoy from the face of the earth.” He estimated 100 tonnes of medical equipment, baby food and winter clothes had been destroyed.

“I've never seen anything like this attack,” he told Reuters. “If this had been a military position, it wouldn't have been targeted with such intensity.”

As the Syrian opposition doesn't have an air force, the White House and State Department said that by the process of elimination, the attack was carried out by either Russian or Syrian aircraft.

Damaged trucks carrying aid, in Aleppo (AP)

Damaged Red Cross and Arab Red Crescent medical supplies are seen in a warehouse in the town of Orum al-Kubra on the western outskirts of the northern Syrian city of Aleppo (Getty Images)

While both the Russian and Syrian governments have denied carrying out the attacks or deliberately targeting humanitarian workers, Washington has insisted it ultimately holds Moscow responsible, since under the recent ceasefire agreement Russia was supposed to coordinate with and prevent President Bashar al-Assad's government from carrying out air strikes. White House spokesperson Ben Rhodes said on Tuesday that US coalition jets were not in operation around Aleppo, adding, "In any event, we hold the Russian goverment responsible."

Syria: UN aid convoy hit by airstrikes in Aleppo

UN Secretary General Ban Ki-moon used his last UN General Assembly address to condemn the attack as “sickening, savage and apparently deliberate.”

Despite inflamed relations with Russia, US Secretary of State John Kerry emerged from international talks on the Syrian conflict in New York on Tuesday to say that the recent ceasefire brokered by the two superpowers “isn’t dead”.