US President Donald Trump and the head of the Secret Service have said the agent shot during the attack at the White House Correspondents' Association dinner was not hit by friendly fire.Secret Service director Sean Curran said during an interview on Fox News on Thursday that one agent was shot at "point-blank range" by the suspect as he rushed a security checkpoint at the Washington Hilton hotel on Saturday."Our officer heroically returned fire," Mr Curran said on The Will Cain Show, adding the agent fired five times.The suspect was not hit by the agent's return fire, Mr Curran explained, but fell to the ground after hitting his knee.He said the suspect was subdued by other federal agents near the top of the stairs that led to the ballroom where Mr Trump, the first lady, top administration officials and hundreds of others dined."They said it wasn't friendly fire It wasn't us," Mr Trump told reporters in the Oval Office on Thursday.Some media reports have suggested the agent may have been shot by friendly fire.Mr Curran also used the Fox interview to defend the security protocols at the dinner."The site was set up perfectly