The fears about would transpire after yesterday's attack have come true:

BAGHDAD, Feb. 23 -- A wave of sectarian strife and recrimination swept Iraq Thursday after Wednesday's bombing of a revered Shiite shrine in the city of Samarra. The Interior Ministry said that more than 100 people have been killed in the violence.

Officials in Baghdad, struggling to restore order, expanded an existing curfew in an effort to get people off the streets after dark and canceled all leaves for Iraqi security forces.

The process of forming a new government also appeared to be in jeopardy, as some Sunni politicians, protesting what they said was a lack of protection for Sunni mosques attacked overnight, said they were pulling out of negotiations with Shiite parties.

There were a great number of disturbances reported across the country Wednesday night and Thursday, too many to accurately track let alone verify.