Dallas attack: Terror link ruled out, says White House

US President Barack Obama earlier on Friday called the shootings a 'vicious, despicable and calculated' attack

The White House said today that investigators had "ruled out" any links to domestic or international terrorism in the shooting of five police officers in Dallas during a protest against police killings of black Americans.

"It is my understanding that investigators have now publicly ruled out the possibility that the individual who carried out this terrible act of violence had any sort of connections to terrorist organisations, either in the United States or around the world," White House spokesman Josh Earnest told reporters in Warsaw.

"I don't think there's a link to any sort of terrorist conspiracy," added Earnest, giving a briefing at a NATO summit in the Polish capital attended by President Barack Obama.

The spokesman added that there were no immediate plans for Obama to alter his travel arrangements to return to the United States.

"It's something we'll follow closely and if it's something that merits a change in plan we'll let you know," Earnest added.

Obama earlier on Friday called the shootings a "vicious, despicable and calculated" attack.