The US Air Force has grounded all B-1B Lancer bombers, a major component of the US long range bombing fleet, for safety reasons, the Air Force said Friday, CNN reported

"During the safety investigation process following an emergency landing of a B-1B in Midland, Texas, an issue with ejection seat components was discovered that necessitated the stand down," Air Force spokesman Major William Russell said in a statement. The order was issued June 7.

"As these issues are resolved, aircraft will return to flight," Russell said.

The highly versatile, supersonic B-1 carries the largest conventional payload of any aircraft in the US Air Force. It does not carry nuclear weapons.

Video reportedly shows airstrike in Syria

Video reportedly shows airstrike in Syria 01:29

Accordingt o CNN, the B-1 bombers were featured in the US strikes against Syria's chemical weapons facilities in April.