You can send your condolences to the federal supermax prison in Colorado where Rahman is serving his life sentence.

(LWJ) — The son of the ‘Blind Sheikh,’ the spiritual leader of the Egyptian Islamic Group who is in a US jail for the 1993 attack on the World Trade Center, was killed in a US airstrike in Afghanistan, according to a statement released today by the terror group.

The Egyptian Islamic Group announced that Ahmed Omar Abdul Rahman, who is also known as Saif, “was killed in an American air bombing from an unmanned plane on the frontlines in Afghanistan,” according to a brief statement that was released on the terror group’s website. The statement was translated by the SITE Intelligence Group.

The Egyptian Islamic Group said Ahmed was killed today, but did not state where in Afghanistan he was killed. Ahmed’s role in the Egyptian Islamic Group was not disclosed.

The International Security Assistance Force could not confirm the report of Ahmed’s death. “We have no operational reporting of this event,” an ISAF spokesman told The Long War Journal.

Ahmed is the son of Sheikh Omar Abdul Rahman, or the Blind Sheikh who is currently serving a life sentence in a US federal prison for his role in the first attack on the World Trade Center in 1993 that killed six Americans. Al Qaeda operations chief Khalid Sheikh Mohammed financed the operation, and several al Qaeda operatives, including Ramzi Yousef, carried out the attack. The terror group detonated a large truck bomb in the basement of the building with the intent of bringing the North tower crashing down onto the South Tower. Eight years later, Khalid Sheikh Mohammed succeeded in bringing down both buidlings by orchestrating the ramming of airplanes into the Twin Towers during the Sept. 11, 2001 attacks.

The Blind Sheikh took control of the Egyptian Islamic Group in the 1980s but maintained close ties to Egyptian Islamic Jihad, which was led by Ayman al Zawahiri, now the head of al Qaeda. The Blind Sheikh issued a fatwa, or religious decree, that justified the assassination of Egyptian President Anwar Sadat, who was killed by members of Egyptian Islamic Jihad in 1981. He spent several years in prison but was never convicted for his role in the murder of Sadat.

In the 1980s, the Blind Sheikh moved to Afghanistan to aid in the fighting against the Soviet Union. He maintained close ties with Zawahiri and al Qaeda founders Osama bin Laden and Abdullah Azzam. After the Soviet withdrawal from Afghanistan, he moved to New York City, where he preached jihad while plotting to conduct attacks in the US. He was able to move to the US despite being on a terrorist watch list.

Several of his sons fought in Afghanistan and developed close ties to al Qaeda.

“Dr. Omar [the Blind Sheikh] had sent a number of his sons to the Afghan Jihad in the days of the Russian occupation, and all of them returned with the exception of Ahmed, who was killed today,” the Egyptian Islamic Group in today’s statement.