PORTLAND, Ore. -- George Tschaggeny stole the wedding ring off the finger of dead MAX attack victim Rick Best, according to a probable cause statement filed June 5.

Tschaggeny has been accused of second-degree abuse of a corpse, identity theft, first-degree theft (looting) and tampering with evidence.

Best died along with Taliesen Namkai-Meche after the men were stabbed May 26 on a MAX train. Micah Fletcher was also stabbed but survived. The three were trying to defuse the actions of a man ranting racist and anti-Muslim slurs, according to police.

Jeremy Christian has been accused of two counts of aggravated murder, one count of attempted murder and other crimes in connection with the attack.

More: Portland MAX attack -- What we know

On surveillance video, Tschaggeny can be seen "attending to Ricky Best during and after his death," according to probable cause statement.

He then can be seen "interacting" with a now dead Best during a chaotic scene of many panicked people. Video shows him leaving the train with several backpacks.

Tschaggeny was arrested June 2 at a homeless camp under the Chavez Boulevard overpass of Interstate 84, adjacent to the Hollywood MAX station where the attack took place.

"Tschaggeny admitted that Ricky Best was deceased when he took Ricky Best's belongings," the court document reads.

The ring was on his pinky finger when taken into custody.