1.   Alleged sightings of them are largely fictional, no more to be depended on than the prosecution of arsonists.

2.   Nor have there been any alleged sightings of Ken Griffey Jr., scouting for a new house in Southlake.

3.   The properties of cold dark matter are so poorly understood that any alleged WIMP sightings are best considered exploratory rather than definitive.

4.   Cohen said analysis of video footage of alleged UFO sightings suggested cameramen had adjusted the focus to make subjects seem unnatural.

5.   Despite the alleged sightings, the Indian army has refrained from pursuing the hostages aggressively, citing fears for their safety.

6.   In the first week of September, UFOs were witnessed by many people in the area, newspapers said, although scientists remained skeptical about the alleged sightings.

7.   They have gained new ammunition following a series of reports, mainly from North Korean defectors, of alleged sightings of American POWs in the tightly closed communist country.