Like the one about how the murder weapon was an icicle?

OAKLAND / No one knows why ice fell from sky / Big chunk hit park, leaving in its wake 24-by-18-inch hole:

The Oakland Fire Department's hazardous-materials team analyzed the projectile and concluded that it contained nothing more hazardous than water, fire Capt. Melinda Drayton said Monday. Fire officials have no idea where it came from, she said.