According to DPA, the UGS facility is located in Diepholz County.
The repository is the largest in Germany, writes TASS.
As a result of the incident, no one was injured.
It is not known when gas injection will be resumed.
Now UGS facility in Reden is 90% full.
The head of the German Federal Grid Agency, Klaus Müller, said earlier that the Germans are saving too little gas, despite already reduced energy consumption.