Sweden's coast guard discovered a fourth gas leak on the damaged Nord Stream pipelines earlier this week, a spokesperson told the Svenska Dagbladet newspaper, APA reports.
The European Union suspects sabotage was behind the gas leaks on the subsea Russian pipelines to Europe and has promised a "robust" response to any intentional disruption of its energy infrastructure.
"Two of these four are in Sweden's exclusive economic zone," coast guard spokesperson Jenny Larsson told the paper late on Wednesday. The other two breaches are in the Danish exclusive economic zone.
The coast guard did not immediately respond to a Reuters request for comment on Thursday.