Kay is going to tell US politicians what his team have found so far on Thursday, and he's expected to say that so far no sign of the weapons have been found.
Saddam did want the weapons
He thinks that Saddam Hussein lied about the weapons hoping to stop the military action in Iraq that forced him from power.
But Kay will also say that the ex-Iraqi leader wanted to try and build weapons of mass destruction, and was trying to buy the things he needed to do so.
Saddam Hussein also did everything he could to make things difficult for the United Nations weapons inspectors sent to Iraq to search for weapons there.