a chechen immigrant being questioned about his relationship with tamerlan tsarnaev was shot dead by fbi agents in florida. thy say th suddenly lunged at him. it was believed he had no connctio bombing but hest abo t an unsolved triple murder in boston in 2011. an unsolved triple murder in boston in 2011. -u s h to track down two shooting. surveillance cameras show one of the subject entering a strip cb, he i he s been identified as 21-year-old henry pettigrew. he and the suspected getaway car driver had been kicked out of that club earlier in the evening. hill, where the third congressional hearing on the irs scandal resulted in a six-hour grilling for three witnesses, but yesterday s hearing will be in attendance.nine tes when abc s tahman bradley reporting. reporter: the woman at the center of the controversy, lois