By Elena Teslova
MOSCOW (AA) - At least three people were killed and one more wounded in a gas pipeline explosion in Russia's Chuvashia region on Tuesday, according to local emergency services.
The incident took place 50 kilometers (31 miles) south of the city of Cheboksary, the capital of Chuvashia region, after a gas leak was registered on the subterranean gas pipeline.
All four were engaged in maintenance works on the pipeline.