A regional police spokesman said the explosive device was attached to the woman's belt and detonated when the door to the taxi - a minibus seating several passengers - closed.
It was not clear whether the blast was accidental, or if the minibus had been the bomber's target.
The blast - which killed the bomber and wounded five passengers - occurred as the bus was several hundred meters (yards) from a police station in the Kazbek district. The minibus had been traveling from Khasavurt to Dylym, the spokesman said
The discovery of the submarine has unveiled a few "inconsistencies." For example, how can one explain the fact that the sub was found where it needed to be searched for from the start?
When on a state visit to Singapore, Russian President Vladimir Putin promised to revisit the discussion of the 1956 Declaration between the USSR and Japan regarding the issue of the peace treaty with Japan
The TurkStream, which runs along the bottom of the Black Sea from Russia's Anapa to Turkey, will consist of two lines, each with a capacity of 15.75 billion cubic meters of gas a year