Pentagon probes claim officials have skewed reports on US military progress against Isis

A report said the Pentagon's inspector general has launched an inquiry

Claims have been made that intelligence about US progress against Isis has been intentionally skewed (Reuters)

Investigators in Washington are investigating allegations that military officials have skewed intelligence assessments about the United States-led campaign in Iraq against Isis to provide a more optimistic account of progress, according to a report.

The report in the New York Times said the probe by the Pentagon’s inspector general was launched after at least one analyst at the Defence Intelligence Agency analyst told the authorities that he had evidence senior officials were reworking conclusions of intelligence assessments.

Among the politicians these assessment were prepared for by the United States Central Command, which is overseeing the US military effort against Isis can bombing campaign and other efforts against the Islamic State — were President Barack Obama.

The newspaper said the revelations about the possibly inaccurate intelligence raises new questions about the direction of the government’s effort against the US and why assessment of progress have varied.

It will also draw parallels with the so-called “stove-piping” of intelligence that took place under President George Bush in relation to the alleged existence of weapons of mass destruction in Iraq.

The Pentagon has declined to comment on the report.