AMNA NAWAZ: For the second time in as many weeks, a U.S.

Secret Service agent fired a gun at an armed suspect in Washington, D.C., less than a mile from the White House.

The agency said an agent returned fire at a man carrying a gun.

A bystander, a juvenile, was also injured.

Our White House correspondent Liz Landers is here now with the latest.

So, Liz, what do we know?

LIZ LANDERS: Amna, the Secret Service gave an update a few minutes ago right there on the scene of where this happened near the Washington Monument here in Washington.

And, apparently, Secret Service identified someone outside of the White House complex who they thought looked suspicious and they thought they saw a gun on this person.

They started following him.

That person then started to flee, apparently took out the firearm, shot at these Secret Service officers.

They returned fire.

They hit the suspect.

The suspect was transported to the hospital.

The deputy Secret Service director did not know that person's condition.

And at least one bystander, a child, was hit.

Law enforcement believes that the child was hit by the suspect, but they're still investigating this.

The child does not have life-threatening injuries at this point.

And one more question that was asked of the deputy director about whether this was related to other attempts on the president's life, he said that he can't say right now and he's not going to guess on that.