A strong but deep 6.9-magnitude earthquake shook western Colombia and most of Ecuador on Saturday, but Colombian President Juan Manuel Santos said no casualties were reported.

"They've just given me the latest bulletin: fortunately there were no victims in Nariño (province) nor in Putumayo (province), nor in Ecuador," Santos said during a ceremony to deliver low-income housing in the northern province of Bolivar.

The quake, whose epicenter was located 2.38 kilometers (1.5 miles) northwest of the town of Ospina, Nariño province, at a depth of 186 kilometers (115 miles), struck at 9:16 a.m., the Colombian Geological Service said.

The temblor was also felt in Tolima, Valle del Cauca, Huila, Risaralda, Quindio, Cauca, Antioquia and Caldas provinces, it added.

Some minor damage was reported in Quindio, Cauca and Nariño provinces but "nothing serious," Carlos Ivan Marquez, head of Colombia's National Disaster Risk Management Unit, said. EFE