DUBAI—Iran is investigating the fatal shootings of at least two Iranians this week at the border with Pakistan, and Islamabad has handed over the body of one of the victims, the Iranian foreign ministry said on Friday. Monday’s shooting of at least two people carrying fuel across the border led to protests that spread across the southeastern Iranian province of Sistan-Baluchestan. Iran said the shooting occurred in Pakistan, but Pakistani border officials said protests broke out after Iranian forces fired at people involved in the illegal Iranian fuel trade. A policeman was reported to have been killed in the unrest in Iran’s southeast, but a provincial security official said calm had returned with the help of religious leaders. Media quoted prominent Baluchi Sunni cleric Molavi Abdulhamid as urging calm and calling for an independent investigation. “The body of at least one person was delivered by Pakistan’s border guards. We are …