Now here’s a death worth rooting for.

The imprisoned al Qaeda spiritual leader known as the “Blind Sheikh” suffered a “medical emergency” at the Springfield federal prison last week, and the FBI is warning his death could lead al Qaeda to launch terror attacks against the United States in reprisal.

According to an FBI bulletin, obtained by ABCNews.com, the 68-year-old Sheikh Omar Abdel Rahman began to spit up blood on Dec. 6, and was rushed from prison to the emergency room of St. John’s Regional Hospital in Springfield, Mo…

The FBI bulletin reminded authorities that the sheikh had previously called for reprisal attacks in the case of his death in prison.

They found a tumor on his liver. More:

The FBI bulletin also notes, “During Ramadan of this past year, al-Qa’ida in Iraq (AQI) released a videotape encouraging all Muslims in Iraq to exert efforts in capturing Western personnel so that they may be exchanged for the release of the Blind Sheik, suggesting that the Blind Sheikh remains a significant source of inspiration for AQ and their sympathizers.

Why wouldn’t he? He was locked up in 1996 and still managed to inspire at least one of the 9/11 hijackers. Follow the link for the video. Like I said at the time: “If you kill them, they’re martyrs. If you lock them up, they’re martyrs. So kill them.”