London/Paris - British and French nuclear-powered submarines, carrying a total of more than 240 crew members, collided in the Atlantic early this month, the British daily The Sun reported on Monday.
According to the report, the British vessel HMS Vanguard and the French U-boat Triomphant were both submerged at the time and on separate missions in the mid-Atlantic at the time of the incident, on February 3 or 4.
The daily cited a senior British Navy source as saying that, while it was unlikely that the collision could have sparked a nuclear explosion, the potential consequences were "unthinkable."