The Blotter says US officials had warnings of an attack in Glasgow:

U.S. law enforcement officials received intelligence reports two weeks ago warning of a possible terror attack in Glasgow against “airport infrastructure or aircraft,” a senior US law enforcement officials tells the Blotter on ABCNews.com.

The intelligence reports also warned that airports and aircraft in the Czech Republic could be the targets of� al Qaeda-connected terrorists.

The warnings were kept secret for operational reasons, according to officials.� In public, the White House and Homeland Security Secretary Michael Chertoff have continued to maintain they know of no specific or credible threats involving the United States, even though the intelligence reports specify US aircraft as possible targets.