whether David Headley Coleman, nabbed by the US Federal Bureau of Investigation, FBI, last month for plotting a major terror attack in India at the behest of Lashkar-e-Taiyaba, visited Mumbai three times. Sources said, the agencies are trying to ascertain if Headley had travelled to Mumbai with Tahawwur Hussain Rana, a Canadian citizen of Pakistani origin, also arrested by the FBI. The agencies have summoned records following inputs that they travelled to Mumbai to carry out reconnaissance of vital installations. The 49-year-old Headley was arrested last month at Chicago's O'Hare International Airport as he was about to board a flight to Philadelphia, intending to travel to Pakistan.