DEVELOPING: Colleyville, TX synagogue held hostage during livestreamed service; police negotiating with man. “A source on the scene told ABC News that an armed suspect took a rabbi and three others hostage and claims to have bombs in unknown locations. The source told ABC that the suspect’s sister is a known terrorist who is incarcerated at Federal Medical Center Carswell, a women’s prison in Fort Worth, and he is demanding that his sister be freed from prison. According to ABC, the FBI is trying to confirm that the hostage taker’s sister is Aafia Siddiqui, a Pakistani woman who is imprisoned on charges related to the attempted murder and assault of United States officers and employees in Afghanistan in 2008. Aafia Siddiqui was transferred to FMC Carswell for medical reasons and is serving an 86-year sentence. The Pakistani government lodged a complaint against U.S. authorities after she reported she was assaulted by another inmate in July…U.S. authorities say Siddiqui is a dangerous terrorist with ties to the ringleader of 9/11. Counter-terrorism groups have dubbed her ‘Lady al-Qaeda,’ and U.S. officials once described her as ‘the most wanted woman in the world.’ The U.S. government has refused to trade her for American hostages multiple times, including for journalist James Foley prior to his execution by ISIS.”

Related: Lady al Qaeda: The World’s Most Wanted Woman.

UPDATE (7:46 PM EST): KHOU-11, Houston’s CBS affiliate, is reporting that “Local police tweeted that one male hostage has since been released uninjured as of 5 p.m. Saturday.”

UPDATE (7:55 PM EST) In “What We Know About the Hostage-Taking in Texas,” Bari Weiss writes, “It is unclear the relation (if any) between the suspect and Aafia Siddiqui. Terrorism experts say it is not uncommon for her to be referred to as ‘sister’ by jihadis. Perhaps this is what the hostage-taker means.”

UPDATE (8:26 PM): The BBC and the London Telegraph are really knocking it out of the park today:

The Telegraph’s article waits nine paragraphs to report, “The suspect had claimed to be the brother of convicted terrorist Aafia Siddiqui, according to a US official quoted by ABC News, though his identity has not been released.”

Also in obfuscation mode, Jen Psaki: Here’s What’s Missing From Jen Psaki’s Tweet About the Texas Synagogue Hostage Situation.

“It’s curious that Psaki failed to mention that the hostage situation was in a synagogue, wouldn’t you agree? While details are slim right now, it’s very clear that the hostage-taker is Muslim, and he’s targeted Jewish people in their place of worship. Biden and members of his administration are never at a loss for words when it comes to hate crimes or even gun violence that fits a certain narrative. Perhaps the tweet wouldn’t have seemed suspiciously devoid of information about who the victims and the perpetrator are if Biden and the Democrats didn’t have a habit of turning a blind eye to the violence that doesn’t fit their preferred narrative. Had it been a white supremacist taking hostages at a black church, I doubt those details would have gone unmentioned.”

UPDATE (10:36 PM): “Prayers answered. All hostages are out alive and safe,” Greg Abbott tweets.

UPDATE (10:42 PM): Texas officials say all hostages safe, out of Colleyville synagogue; hostage-taker dead. “U.S. Rep. Beth Van Duyne told a Star-Telegram reporter in a text [that] the hostage-taker is dead. A loud bang followed by what sounded like gunfire was heard about 9:12 p.m. Saturday outside the Colleyville synagogue where a hostage situation has been ongoing for hours.”

(Updated and bumped.)

UPDATE (FROM GLENN): I like a story with a happy ending.