Barack Obama, George W Bush to address Dallas memorial service

President Barack Obama and former President George W Bush are slated to address an interfaith memorial service in Dallas on Tuesday for the five police officers who were killed in a sniper attack last week.

Obama will speak on Tuesday during an interfaith memorial service at the Morton H Meyerson Symphony Center. He is visiting on invitation of the mayor of Dallas, the White House said.

The President was overseas in Poland at the time of the deadly attack, and will depart from Rota, Spain after a short visit with troops at the naval station there, the White House says.

Obama will return to Washington Monday night, a day earlier than planned, skipping a stop in Seville.

Fourteen people, including 12 police officers, were shot by a lone gunman on Thursday night after a peaceful protest against officer-involved violence around the country, officials said on Friday. Five of those officers were killed.

Obama condemned the sniper-style shootings of Dallas police officers Friday, calling the assault a "vicious, calculated and despicable attack on law enforcement.