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.

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.

The suspect died as an FBI team breached the temple.

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