IN PHOTOS: World's landmarks show solidarity with Paris

Photos from the Associated Press

MANILA, Philippines — The Empire State Building is dark in sympathy for the people of Paris after more than 120 people were killed in Friday's series of shootings and explosions.

Saturday is the second consecutive night the 102-story New York landmark is not lit up.

Other famous landmarks around the world flashed the national colors of France as the world mourns for the victims in the spate of killings.

The 408-foot (125-meter)spire atop One World Trade Center is lit again Saturday night in the colors of the French flag. New York Gov. Andrew Cuomo says the spire will remain lit blue, white and red on Sunday.

New York City's Mayor Bill de Blasio says an arch in Manhattan's Washington Square Park was also illuminated with the French colors on Saturday.

The Eiffel Tower similarly stood dark in a symbol of mourning as France struggled to absorb the deadliest violence on its soil since World War II: coordinated gun-and-suicide bombing attacks across Paris that left at least 129 people dead and 352 injured.

President Francois Hollande vowed that France would wage "merciless" war on the Islamic State group, which claimed responsibility for the mayhem, as investigators raced to track down their accomplices and uncovered possible links to networks in Belgium and Syria.

Paris prosecutor Francois Molins said three groups of attackers, including seven suicide bombers, carried out the "act of barbarism" that shattered a Parisian Friday night. — Reports from Greg Keller and Jamey Keaten, Associated Press, and Camille Diola, Philstar.com