Two people were arrested in Cheshire, England, in connection with terrorist incidents in England and Scotland, bringing the total number of people in custody to four, Scotland Yard said early Sunday.
On Saturday, a sport utility vehicle was driven into an entrance at Scotland's Glasgow International Airport and burst into flames. On Friday, two explosives-laden cars were discovered at two locations in London.
The United Kingdom raised its terrorism threat level to critical, the highest level possible, after the attack Saturday at Scotland's busiest airport. 
Read full article »
Copyright 2007 CNN. All rights reserved.This material may not be published, broadcast, rewritten, or redistributed. Associated Press contributed to this report.