Iran's mission to the United Nations said in a statement on Monday that Tehran was not involved in an attack that killed three US service members in northeastern Jordan near the Syrian border.
In a statement published by the state news agency IRNA, the mission said: "Iran had no connection and had nothing to do with the attack on the US base. There is a conflict between US forces and resistance groups in the region, which reciprocate retaliatory attacks."
US President Joe Biden blamed Iran-backed groups for the unmanned aerial drone attack on US forces, the first deadly strike against US forces since the Israel-Hamas war erupted in October and sent shock waves throughout the Middle East.
The attack is a major escalation of the already tense situation in the Middle East, where war broke out in Gaza after an attack by Palestinian Islamist group Hamas on Israel on October 7.