The Latest: Synagogue suspect monitored by ADL since 2016

DENVER (AP) — The Latest on a man charged with plotting to bomb a Colorado synagogue (all times local):

4:05 p.m.

The regional head of the Anti-Defamation League says it had been monitoring the online activity of a man accused of plotting to bomb a Colorado synagogue for a couple of years.

The ADL's Mountain States director, Scott Levin, said Monday that the group's extremist center shared information with law enforcement about what it learned generally since May 2016 but not regarding the alleged plot against Temple Emanuel in Pueblo.

He praised law enforcement for Holzer's swift arrest. According to the ADL, it is the 13th time someone has been arrested for allegedly plotting attacks or making threats against the Jewish community since the attack on Pittsburgh's Tree of Life synagogue.

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2:45 p.m.

A Thursday hearing has been set for a Colorado man charged with plotting to bomb a synagogue.

Twenty-seven-year-old Richard Holzer appeared briefly in Denver federal court on Monday. He was handcuffed and wearing a gray polo shirt with a black collar.

Holzer answered "yes" when a judge asked if he understood the domestic terrorism charge against him.

The FBI says Holzer was arrested Friday in Pueblo for plotting to blow that city's Temple Emanuel.

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1:05 p.m.

The FBI says it has arrested a man in a plot to bomb an historic Colorado synagogue. The co-conspirators turned out to be undercover agents.

Court documents say Richard Holzer was arrested Friday in Pueblo just after the agents brought him what were supposedly two pipe bombs along with dynamite to blow up Temple Emanuel.

The agents said Holzer described the explosives as "absolutely gorgeous" and said they should go ahead with the attack overnight to avoid police.

The investigation into Holzer began after an undercover FBI agent purporting to be a woman who supports white supremacy contacted him on Facebook.

Holzer is due to make his first court appearance Monday.

It's not clear if he has a lawyer representing him.