During engineering reconnaissance 2 Russian sappers died in Shatoisky district of Chechnya. Representative of Chechen Ministry of Interior Affairs informed on Saturday morning that Russian servicemen died in the suburbs of Dedukhoi settlement as a result of unestablished explosive assembly`s operation. Details of the accident are being investigated. He also informed that workshop for self-made explosive devices` production was discovered in Staropromyslovsky district of Groznyy. It was situated in the basement of the house near "Electropribor" plant. 2 people are detained on suspicion of self-made explosive assemblies` production.