Website claims to be selling letter from alleged Cascade Mall shooter

A letter and an envelope from the alleged Cascade Mall shooter could fetch hundreds of dollars if it is sold online.

Arcan Cetin reportedly wrote a letter while sitting in the Skagit County Jail. It went up for auction on the 'True Crime Auction House' website.

According to the product information, the letter and envelope are both handwritten. The letter is signed in full.

>>Rantz: Arcan Cetin won't get death penalty under Gov. Jay Inslee

Cetin is charged with murdering five people in the Cascade Mall Macy’s on Sept. 23.

Cetin has declined to provide a motive for the shootings, but the Associated Press reports he had a history of violence against his girlfriend and family. Reports obtained by AP show he held an interest in beheadings and followed ISIS news.

People who know Cetin have spoken out. Austin Hendrix told KIRO Radio's Jason and Burns that he wasn't totally shocked by Cetin's actions.

“I can’t say I wasn’t surprised because he’s done other things before,” he said. “But I’m surprised he’s gone this far. That he went that far, I’m definitely surprised.”

Though the letter cannot be read in its entirety on the auction house’s website, a photo shows the author of the letter clearly references Battlefield 1 — a popular first-person shooting video game. The letter ends with: “Talk to you later – Arcan Cetin.”

The identity of the person selling the letter has not been made public.

Victims’ advocate Andy Kahan tells KIRO 7 it is wrong to sell a letter from an alleged killer.

“High-profile murderers … you continue to give them infamy and mortality that they richly don’t deserve,” he said. “You just shouldn’t be allowed to rob, rape, and murder and then turn around and make a buck off of it.”

Cetin of Oak Harbor is being held on suspicion of five counts of first-degree, premeditated murder.

Bail is set at $2 million. Prosecutors have until Jan. 6 to file formal charges.