Wampum

Former presidential candidate and current parliament speaker Ali Larijani said the United States was implicated in Sunday's bomb attack. ‘We consider the recent terrorist attack to be the result of US action. This is a sign of America's animosity against our country. Mr. Obama has said he will extend his hand towards Iran, but with this terrorist action he has burned his hand."

Iranian state television is citing informed sources claiming that Britain was directly involved in the attack.

According to Fars, the dead include General Nour-Ali Shoushtari, adjoint commander of the Revolutionary Guards' ground forces and a senior officer in the Quods force, General Mohammad-Zadeh, commander of the Revolutionary Guards in Sistan-Baluchestan province, and [rank unknown] Amir-al Momenin, commander of the Revolutionary Guards in the city of Iranshahr.

Collaterals include another 25 persons, a mix of lower ranking RG personnel and local tribal notables at the target site, and the same number of wounded. The targets were engaged with a man-pack munition, and Abdolmalek Rigi's Jundollah (God's soldiers) is credited with the primary operational role.

Keep in mind that Baluchistan has a nationalist movement of its own, see this, and Pakistan credits India with supporting opfors operating in Baluchistan, in addition to the well-known proxy conflict in Afghanistan, and US forces are present on Iran's eastern boarder, in Baluchistan, and a non-trivial amount of gas and oil is present, and the investment target of China's development of the port at Gwadar (part of Oman until 1958), and of course, "Baluchistan" for some includes the Sistan and Baluchestan Province of Iran, where the demographic is non-Persian and confessionally Sunni.