(CNN) -- In the past week, U.S. officials have announced charges in five terrorism probes in five states. It is a confluence of cases unlike anything the country has seen since the September 11, 2001, attacks. Najibullah Zazi, 24, has been indicted on a charge of conspiracy to use weapons of mass destruction in the U.S. But CNN's national security analyst Peter Bergen and law enforcement analyst Mike Brooks say not to read too much into it -- the rush of arrests is a coincidence. "These are things that are happening completely independently," Bergen said. Brooks agreed, calling it a "happenstance."
@highlight
Five terrorism cases in five states not connected, CNN analysts say
@highlight
Arrests in Colorado, New York, Texas, Illinois, North Carolina called "happenstance"
@highlight
Illinois arrest not announced until Texas operation was completed
There was one element of the developments of the past week that was coordinated, Bergen and Brooks noted -- the timing with which authorities released information about the cases in @placeholder and Texas.