According to BBC News, the ship was tracked by police boats yesterday as it sailed through the Suez Canal to Alexandria, Egypt, today's port of call. Police boats are also standing guard at the dock today, though excursions are being operated as planned.
In its statement, Cunard says it has kept the U.K., U.S. and Egyptian authorities fully informed of the situation. "We treat all such information very seriously ... we believe there is no cause for alarm, however as a precaution we have placed the ship onto a higher level of security as it passes through this area. In addition shoreside security has been increased at the various ports of call."
QE2 is currently on its 109-day world cruise; the next scheduled port of call is Kusadasi, in Turkey.
We'll keep you posted.