The Interim Test Range (ITR), Chandipur espionage case is getting curiouser by the day. Based on the information extracted from the five accused arrested in the case during their interrogation during their seven-day police remand, the Crime Branch has decided to seek the help of Interpol to trace and ascertain the details of the UK number used by a woman, believed to be an ISI operative, to trap five employees of the missile test range of Defence Research and Development Organisation (DRDO) at Chandipur and extract sensitive defence information from them.