Investigators: Shahzad rehearsed Times Square plot
Officials say the suspected Times Square bomber rehearsed.
Investigators say on April 28 Faisal Shahzad drove one of his SUV's to Times Square to figure out the best place to leave it.
Two days later on April 30, officials say Shahzad went back to Times Square with a different SUV and parked it in a different location.
On Saturday, Shahzad allegedly loaded his Pathfinder with explosives and parked it in the city.
Officials say his original plan was to drive his other SUV home but he forgot the keys and had to take a train.
Shahzad has waived his rights to arraignment and investigators say he is still sharing valuable information with them.