A fourth leak has been detected in the Nord Stream 1 and 2 gas pipelines from Russia to Germany, with still no firm indications of what or who might have caused the damage. Two of the leaks are located in Sweden’s Exclusive Economic Zone and two in Denmark’s, the Swedish coastguard’s command centre told dpa on Thursday. Powerful blasts were recorded in the Baltic Sea on Monday, the same day that pressure on both pipelines dropped, prompting accusations from Europe of sabotage. Three of the four leaks are located within a few kilometres of each other, the Swedish Coastguard said. “There are cur…