At least two people were confirmed dead after Daesh militants attacked the Iraqi embassy in Kabul on Monday, as conflicting reports of fatalities emerged from official sources.

Wahidullah Majroh, a spokesman for the Afghan Public Health Ministry, told dpa that four people were killed and at least six others wounded in the attack, adding that the wounded were taken to hospitals across the city.

However, Najib Danish, a spokesman for the Afghan Interior Ministry said only two people, a male civilian and a female embassy employee, were killed, while three police officers were wounded.

Danish said only two attackers, including the suicide bomber, were involved.

His comments contradicted an earlier statement from the Interior Ministry, which said that four assailants were involved in the attack.

The statement also said that the Iraqi ambassador, his deputy and all embassy staff had been moved to a safe location and that none of the embassy staff were harmed.

The attack ended four hours after it was launched by a suicide bomber blowing himself up at the embassy gate, the statement said, adding that Afghan police special forces reached the scene of the attack "fast and on time."

Monday's attack on the embassy came two weeks after the Iraqi ambassador to Afghanistan, Farazdak Al-Ghalli, held a rare press conference celebrating his government's retaking of the city of Mosul from Daesh.

A statement distributed by Daesh's semi-official Amaq news agency had earlier claimed that two suicide bombers blew themselves up at the embassy.

The statement added that at least seven guards were killed.

Kabul has seen 11 large-scale attacks since the beginning of the year.

A UN mid-year report published July 17 said the Afghan capital accounts for the highest number of civilian casualties in the country, at 19 per cent.

Afghanistan is also battling and ongoing and increasingly violent Taliban insurgency.