The causes of this explosion of crime are complex.
The cause of the explosion remains unclear at this point".
"It is too early to say whether this was the cause of the explosion," said Neville Blyth, an investigator with the Australian Air Transport Safety Bureau.
The National Transportation Safety Board is investigating the cause of the explosion, which occurred in this hillside community about 15 miles south of San Francisco on Thursday evening.
Whether the cause of this population explosion is a warming trend in Northern breeding grounds, an increase in the food supply in their winter homes or a combination, few would dispute that there are too many birds in all five groups of snow geese that migrate along North America's flyways.
3 14 p.m.: This story was updated with additional details on the cause of the explosion.
The cause of the explosion was not known.
The cause of the explosion is still not known.
The cause of the explosion was under investigation.
The cause of the explosion is under investigation.
