A top Colombian official says his government will investigate Ecuador's claim that Colombian military aircraft violated Ecuadorean territory.

Deputy Foreign Minister Camilo Reyes said Tuesday his government has received a protest note from Ecuador. But he told reporters that the incursion, if it happened, was not premeditated.

Reyes noted Colombian military forces have been pursuing leftist rebels in southern Colombia, near the border with Ecuador.

Ecuador says Colombian military aircraft and helicopters strayed into Ecuadorean air space Saturday and fired machine guns at targets in Ecuadorean territory.

The Associated Press quotes Ecuador's Defense Minister, Oswaldo Jarrin as demanding an apology from Colombia.

Ecuador has long expressed concern that violence from Colombia's four-decade war against leftist rebels could spill across the lengthy border separating the two nations.

Some information for this report was provided by AP and Reuters.