"Regardless of motive, the death of these three fearless officers underscores the danger that police across the country confront every single day", Obama said.
The suspect, who was not identified by police at an afternoon press conference, died at the scene, Louisiana State Police Superintendent Col. Mike Edmonson said this afternoon. It is unknown at this time whether additional suspects were connected to this shooting. They say the men were dressed in all black, they changed clothes inside the store, then left in a silver Nissan with a Texas license plate. The other two officers were in stable condition.
"Today has been a very tough day here in Baton Rouge and in Louisiana and in our country - an absolutely unspeakable, heinous attack on law enforcement here in Baton Rouge", Louisiana Governor John Bel Edwards said.
Obama says he has offered the full support of the federal government to Louisiana state and local officials.
One officer was listed in critical condition at Our Lady of the Lake Regional Medical Center, while another was in fair condition, hospital spokeswoman Kelly Zimmerman said.
Edwards said he has been in touch with President Barack Obama, who expressed condolences to the Baton Rouge community on behalf of the entire nation. This is the 16th time Obama has addressed the nation after a shooting.
Last week, police arrested more than 100 protesters taking part in a demonstration against police brutality in Baton Rouge under the banner of the Black Lives Matter movement.
One of those killed was Sterling, who was shot two days before the Dallas attack.
In his remarks Sunday, Obama reminded people that he had also said the Dallas shooter would not be the last person to try to make Americans turn on each other.
- 8:40 a.m. Baton Rouge police department officers at a convenience store observed the individual.
He also spoke by telephone to the families of two black men shot in separate incidents in Baton Rouge and suburban St. Paul, Minnesota.
Michelle Rogers said the pastor at her church led prayers Sunday for Sterling's family and police officers, asking members of the congregation to stand up if they knew an officer. Multiple police vehicles were stationed at the hospital, and a police officer with a long gun was blocking the parking lot at the emergency room.
The suspect is believed to have been involved in the shooting of law enforcement officers in the Louisiana city early Sunday. The shooting occurred less than 1 mile from police headquarters.
The shooting came amid a spate of race-tinged violence involving law enforcement.
"Only we can prove that we have the grace and the character and the common humanity to end this kind of senseless violence, to reduce fear and mistrust within the American family, to set an example for our children", he said.
Coppola said that authorities believe the "scene is contained", meaning that a shooter was unlikely on the loose.