Looks like a complete military coup.
http://timesofindia.indiatimes.com/Musharraf_imposes_Emergency_in_Pakistan/articleshow/2515052.cms"After days of speculation about the General resorting to "supra-constitutional measures", the military ruler issued a "provisional constitutional order" imposing emergency rule in the country.
"The chief of army staff (Musharraf) has proclaimed a state of emergency and issued a provisional constitutional order," the state-run Pakistan TV said.
Security forces were deployed in the capital and other parts of the country/"