The drone hit the Baghdad Diplomatic Support Centre, next to the Baghdad airport, impacting near a guard tower, the internal alert from the Department said.

Individuals at the facility were ordered to “duck and cover”, it said.

A separate alert said ​everyone was accounted for.

The White House and the State Department did not immediately respond to a request ​for comment.

The Washington Post first reported the incident and said a total of six ⁠drones were launched toward the compound in Baghdad and that five were shot down.

It also said the attack ​was likely carried out by an umbrella group of Iran-backed armed factions.

Iraq condemned the ​attacks near the Iraqi bases but did not mention the damaged US facility, according to the Washington Post.

“The (Iraqi) Ministry of Defence stresses that it will not stand by as a spectator. Rather, it will firmly confront and pursue … all parties involved,” the ministry said in ​a statement cited by the newspaper.

The US and Israel began attacks on Iran on February 28. Iran has responded ​with its own strikes on Israel and Gulf countries with US bases.

The United States and Israel pounded Iran on Tuesday with what the Pentagon and Iranians on the ground called the most intense air strikes of the war, despite global markets betting that President Donald Trump will seek to end the conflict soon.

The Revolutionary Guards said it ​fired missiles on Tuesday evening ​at Qatar’s US-operated Al ⁠Udeid base and the Al Harir base in Iraq’s Kurdistan.

Those launches were followed by drone attacks targeting a gathering of US troops at Al Dhafra air base in ​the United Arab Emirates and Juffair naval base in Bahrain.

US President Donald Trump has said ​the strikes were ⁠aimed at eliminating what he called imminent threats from Iran, citing its nuclear and ballistic missile programmes and its support for Hamas and Hezbollah.

Iran, which denies seeking a nuclear weapon, has called the attacks an unlawful violation of its sovereignty.

Iran does ⁠not have ​nuclear weapons.

Israel is believed to be the only Middle Eastern ​country with nuclear weapons, while Washington is also nuclear-armed.

Israel says 11 civilians have been killed in Iranian attacks.

Iran’s UN ambassador said on Tuesday the US-Israeli strikes had ​killed more than 1,300 civilians.