NEW DELHI—Investigators in India have concluded that the Quds Force of Iran’s terrorist Islamic Revolutionary Guards Corps was behind the bomb blast that occurred outside the Israel embassy in Delhi in late January, Indian media have reported. Indian counterterrorism agencies, who have drawn up a list of suspects, have concluded that the improvised explosive device was planted by a local Indian Shia group under the guidance of the Iranian Quds Force, according to the Indian English daily Hindustan Times, on March 8. The bomb that went off outside the Israel embassy on Jan. 29 was of very low intensity, was remotely controlled, didn’t have human targets, and shattered the windows of three cars parked nearby, investigators said. The investigating agencies had recovered a letter from the site of the explosion, addressed to the Israeli ambassador to India, Ron Malka. The letter called him a terrorist and a devil, and swore revenge for the deaths …