complicated jigsaw with thousands of pieces . '' They were charged in April 2007 . Police said they analyzed more than 4,700 phone numbers and 90,000 calls . They discovered the three men had made a trip to London in December 2004 -- seven months before the fatal bombings -- which prosecutors claimed was a reconnaissance trip to scout potential targets . Prosecutors said that on December 16 , 2004 , the men traveled from the northern English city of Leeds to London , along with Hasib Hussain , one of the July 7 bombers . When they got to the capital , they met with Lindsay . Over the next two days , prosecutors claimed , the men visited tourist sites including the London Eye ferris wheel , the London Aquarium and the Natural History Museum , as well as underground train locations . Some of the spots , prosecutors said , were near where the July 7 bombs were eventually detonated . Police called it `` the first feasibility study '' for the London bombings -- and whether they were looking at tourist or transportation sites , the men were seeking out potential bomb targets , police said
LONDON , England -LRB- CNN -RRB- -- A jury Tuesday acquitted three men of charges that they helped the bombers who carried out the July 7 , 2005 , attacks on the London transportation system . Sadeer Saleem was accused of helping to plan the July 7 , 2005 bombings in London The four bombers died in the blasts , but Waheed Ali , Sadeer Saleem and Mohammed Shakil were accused of helping them by conducting reconnaissance and conspiring with them . Two of the men -- Ali and Shakil -- were convicted of a second charge of conspiracy to attend a place used for terrorist training . They will be sentenced Wednesday , London 's Metropolitan Police said . Tuesday 's verdicts came at the end of the men 's retrial at Kingston Crown Court in southwest London . A separate jury failed to reach a verdict in their first trial , which ended in August after three months . The bombings in 2005 killed 52 people in blasts on three subway trains and a bus . At least 900 people were wounded . Police arrested the three in March 2007 after piecing together what they called a ``