Barack Obama will meet relatives of the five police officers killed in Dallas when a gunman opened fire on a protest march, the White House said.

At least 11 people died and dozens were injured in tornadoes that swept through the Dallas area and caused substantial damage while six people have died in flooding in the US mid-west.

Fears of the ebola virus have deepened with word that a second US nurse caught the disease from a patient and flew across the country’s mid-west aboard an airliner the day before she was diagnosed.

Fears of the Ebola virus have deepened with word that a second US nurse caught the disease from a patient and flew across the Midwest aboard an airliner the day before she was diagnosed.