A man faces a federal charge for allegedly selling the gun used in the Texas synagogue hostage situation earlier this month, authorities said.

Two men were arrested in England on Wednesday morning as part of an ongoing investigation into a hostage-taking incident at a synagogue in the United States.

The FBI is treating the hostage situation at a Texas synagogue as a terrorist act and hate crime, authorities said Friday.

Two men were arrested in England on Thursday morning as part of an ongoing investigation into a hostage-taking incident at a synagogue in the United States.

American Jewish organizations and leaders are looking at how they can support the Colleyville community and American Jewry at large.

The Texas synagogue attack has put the Jewish community on high alert, highlighting safety and security trainings.

The Department of Homeland Security and the FBI are warning faith-based communities they "have and will likely continue to be targets of violence."

The man who allegedly held people hostage at a Texas synagogue on Saturday was known to British authorities, law enforcement sources told ABC News on Tuesday.

Multiple law enforcement sources in the U.S. told ABC News that the teens are the children of the alleged hostage-taker.

ABC's senior investigative reporter, Aaron Katersky, discusses the possible motive behind the hostage crisis and the possible threats to faith-based communities around the country.

Rabbi Charlie Cytron-Walker held a prayer service for the community of Colleyville, Texas, in the wake of the deadly ordeal.

The suspected gunman is Malik Faisal Akram, a British national, who arrived to the U.S. on Dec. 29. Rabbi Charlie Cytron says he distracted the gunman so that he and the other hostages could escape.

Martha Raddatz interviews former FBI agent Brad Garrett on "This Week."

Rabbi Charlie Cytron-Walker said he felt he was facing a life-or-death situation and knew he had to take desperate measures to survive.

After a standoff that lasted 10 hours, the hostages were saved when an elite FBI hostage rescue team breached the temple.

The suspect died as an FBI team breached the temple.

Mireya Villareal reports on the synagogue hostage situation rescue in Dallas on "This Week."

An elite FBI Hostage Rescue Team entered the synagogue and rescued the hostages.

President Joe Biden delivered remarks Sunday on the Texas synagogue hostage situation, calling it “an act of terror.”

An armed man took a rabbi and at least three others hostage, authorities said.

An armed gunman is dead and four hostages are safe after a 10-hour standoff at a Texas synagogue last night.

Stacy Silverman and Olivia Zelling were watching the livestream of the synagogue service when the hostage takeover happened Saturday. They share details of the horrifying experience with “GMA.”

An armed suspect took a rabbi and three other hostages at a synagogue in the Dallas-Fort Worth area, according to several sources.