(AP) - A senior Obama administration official says no one in the U.S. government is aware of a plot for an attack on subway systems in the U.S. and Paris.

Iraq's prime minister says his country's intelligence operation has uncovered the plot. But the U.S. official says the plot was never brought up in meetings with Iraqi officials this week in New York.

President Barack Obama met with Prime Minister Haider al-Abadi Wednesday on the sidelines of the UN General Assembly. The Iraqi leader told journalists Thursday that the plot was the work of foreign fighters of the Islamic State group in Iraq.

The administration official was not authorized to discuss the matter publicly by name and spoke on condition of anonymity.