WASHINGTON: To honour victims of the shooting inside a Gurudwara in Wisconsin, US President Barack Obama has ordered that the American flags be flown at half-staff at all the US government buildings and its diplomatic missions overseas till August 10.

"As a mark of respect for the victims of the senseless acts of violence in Oak Creek, Wisconsin,... I hereby order that the flag of the United States shall be flown at half-staff at the White House and upon all public buildings and grounds, at all military posts and naval stations, and on all naval vessels of the Federal Government in the District of Columbia and throughout the United States and its Territories and possessions until sunset , August 10, 2012," said a proclamation issued by the US President.

"I also direct that the flag shall be flown at half-staff for the same length of time at all United States embassies, legations, consular offices, and other facilities abroad, including all military facilities and naval vessels and stations," the statement said.

On August 5, six persons were killed and three critically injured when a gunman opened fire inside a Gurudwara in Wisconsin as the congregation was making preparations for Sunday morning prayers.