An email sent by a local mosque to federal law enforcement reveals the man who fatally shot an RTD security officer was kicked out for being “very radicalized” back in December. The email was sent to the Department of Homeland Security.

Joshua Cummings, 37, is accused of fatally shooting RTD security officer Scott Von Lanken on Tuesday night in what was described as an unprovoked attacked.

RELATED: Attack on RTD security guard was ‘completely unprovoked’

The email, which came partially redacted to 9NEWS, paints Cummings as an aggressive attendee who wouldn’t listen to reason. The email describes a lunch for people joining Islam that Cummings attended after recently moving to Colorado from Texas.

Here’s the email in its entirety:

Hi [REDACTED],

[REDACTED] organized a lunch for reverts (converts to Islam) today, 24th Dec, at Masjid [REDACTED].

One person who attended seems to be very radicalized.

He only gave his first name Joshua. Said he is from Pampa,TX. Also that he had no ID on him, it was stolen. We had a registration process, but declined to register, saying he did not trust the authorities. He gave his phone number to one of our older reverts, [REDACTED]. Said he is staying at a hotel here somewhere. He does not have a job. He has a trailer, but sold the truck. Came to the event by bike. He reverted three years or so back, I think.

He said he is married, and that some of his family threaten to kill his wife. And also that she did not trust the Masjid to come to the event. Implying that she was Muslim too.

He seems pretty advanced in his path of radicalization.

He considers the Masjids as doing Shirk (associating partners with God) and are Mushrik. He also feels that it okay to fight now (not jihad/struggle, but actually fight), here to establish the rule of Islam. He was also quoting a verse from the Quran (2:54) where he claimed Prophet Musa (peace be upon him) was asked to kill his entire community (wrong).

He also attended the open house at Masjid [REDACTED] earlier this month, and rebuked publicly during that session, the presenter as being soft and not supporting enough the Hudud laws (criminal laws in shariah).

After talking to him for some time, he agreed to meet with some Imams to clarify his thoughts. I am hoping to arrange a meeting of one of the stronger/more knowledgeable Imams with him to see if he can be mellowed a bit. But I doubt it would help. He is not listening to reason.

I am attaching a few pictures and a video we have of him.

He is the bearded Caucasian in a cap, with vest, and green T-shirt beside the pillar with a backpack in front of him.

The [REDACTED] team talked about this, and we decided we should let you know.

Thanks,

[REDACTED]

Spokesperson and civil rights attorney Qusair Mohamedbhai sent this statement in regards to the above email:

“The Colorado Muslims who were involved in reporting Joshua Cummings in December 2016 to federal law enforcement would like to thank the authorities for their professional and prompt investigation into this matter. The individuals who reported Mr. Cummings, a new arrival to Colorado, were determined to protect and defend our communities. It appeared that law enforcement took this alert very seriously. The local Muslim communities cherish their relationships with their neighbors and local, state, and federal law enforcement, and will always oppose those who undermine our collective American values.”

For a second day the FBI was out a motel in Englewood where Cummings was staying.

Investigators carried out personal belongings including clothes, books, a crib, an ax and pickaxe.

The manager says Cummings had been staying at the motel on and off for a couple months with his wife and baby.

He said Cummings was one of his favorite tenants, and recalled when he anonymously paid someone else’s rent because he knew they were having financial problems.

Cummings was employed by Allied Forces, a temporary employment agency, working in a Goodwill Warehouse for a short time.

Records show he even registered to start a nonprofit to help students teachers and administrators in Texas.