It is being reported that as many as 80 "made in Iran" missiles were fired on Iranians living at Camp Liberty in the Iraqi capital of Baghdad, according to a spokesman for the National Council of Resistance of Iran.

The attack near the Baghdad International Airport killed as many as 23 people and wounded dozens, on Thursday evening. The Washington Post said that 16 Iraqi guards at the camp were also injured in the attack.

Camp Liberty, a former US base, houses a group of Iranian exiles known as the Mujahedeen-e-Khalq. This is the fourth attack on the camp since 2013.

According to the United Nations, as many as 2,200 members of the Iranian opposition live there.

Maryam Rajavi, the president-elect of the Paris-based National Council of Resistance of Iran, the parent organisation of Mujahedeen-e-Khalq, has accused the Iranian mullah regime of having orchestrated the attack.

"The government of Iraq and the United Nations who signed a Memorandum of Understanding and set up what they dubbed as a Temporary Transit Location (TTL) since 2011, are formally and legally accountable for this attack," Rajavi said.

"In our view, however, as was the case in the six previous bloodbaths in Ashraf and Liberty, the Iranian regime's agents in the government of Iraq are responsible for this attack and the United States and the United Nations are well aware of this fact." she added.

The UNHCR has strongly condemned the attack.  "This is a most deplorable act, and I am greatly concerned at the harm that has been inflicted on those living at Camp Liberty," said High Commissioner for Refugees, António Guterres. "Every effort must continue to be made for the injured and to identify and bring to account those responsible."

According to the NCRI, Falaq missiles built by the Iranian regime, which are modelled on the Russian BM-24, were used in the attack on the camp. The 333 mm unguided surface-to-surface artillery rocket has a range of 10,000 metres.