He was subsequently rearrested for suspicion of an act of sabotage. Gumarov, fellow Guantanamo detainee Timur Ishmuratov and Fanis Shaikhutdinov were convicted of bombing a natural gas pipeline on May 9, 2006.[4] Gumarov has been described as a failed businessman from Sverdlovsk who is alleged to have had military training in Chechnya.[5]