Jüri Luik has urged Spain to conduct a thorough investigation of the incident (Picture: Raul Mee/EU2017EE).
Estonia's defence minister has ordered a halt to NATO air exercises in the country pending an investigation, after a missile was accidentally fired over the Baltic country's airspace by a Spanish fighter jet on a military exercise.
The air-to-air missile that was erroneously launched on Tuesday over southern Estonia has not been found, but no one was reported injured or killed by the misfiring, Juri Luik said.
"The Spanish defence minister has apologised and expressed deep regret," Mr Luik said at a news conference in the Estonian capital of Tallinn, adding that the commander of the Spanish armed forces had apologised as well.
Estonian prime minister Juri Ratas spoke with NATO Secretary-General Jens Stoltenberg on Wednesday, expressing Estonia's concern over the "serious incident".
The AMRAAM-type missile has a range of up to 100 kilometers (62 miles). It may have crashed into a remote nature reserve in the eastern Jogeva region, not far from Estonia's border with Russia, or triggered its built-in self-destruct mode and exploded in midair, Mr Luik said.
While Mr Luik urged Spain to conduct a thorough investigation, he also launched an internal review of the safety regulations for arranging military air exercises in the tiny NATO nation of 1.3 million.
Until the completion of that review, "I have suspended all NATO exercises in the Estonian airspace," he said.
Mr Luik reaffirmed Estonia's trust in NATO's Baltic air mission, which started in 2004 as Estonia, Latvia and Lithuania joined the military alliance.
The three former Soviet republics do not possess fighter jets of their own.
The air policing is carried out from NATO's bases in Siauliai, Lithuania, and Amari, Estonia. French, Portuguese and Spanish fighter jets are currently in charge of the rotating four-month mission.
In Moscow, Russian foreign ministry spokeswoman Maria Zakharova said the Estonian missile incident showed that NATO's air drills are security risks for the region:
"What happened is yet another vivid demonstration of the fact that NATO's actions, including in the Baltic states, pose extra risks to security rather than improving it."