The defence ministry has launched an investigation after one of its fighter jets accidentally fired a missile over Estonia during a training mission.
The incident happened on Tuesday afternoon “in an area of southwest Estonia authorised for this type of exercise”, the ministry said.
It added that the air-to-air missile did not cause damage and was designed to self-destruct.
But Estonia’s military says it is looking for the remains of the missile.
Two Spanish jets and two French jets were taking part in an exercise as part of Nato’s Baltic Air Policing mission when the incident happened.