3 Comanche County inmates accused of plotting to stab another

Two Comanche County Detention Center inmates held for a fatal August jail beating are now accused, with a third inmate, of working in concert to commit an Oct. 13 stabbing behind bars.

The three are connected to an Oct. 13 assault in the jail’s Center Pod 257 that left two inmates wounded.

According to the probable cause affidavit, Markie “Smoke” Ishman is accused of stabbing at least inmate with a shank smuggled into the jail.

Investigators allege that Ishman and Calvin Donshell “50/50” Wynn conspired to commit the attack and that the weapon was found in possession of Calvin Lykell Christopher Riss. Two other inmates were identified as being part of the conspiracy but, records indicate, no charges have been filed as of Wednesday.

The three inmates made their initial appearances Wednesday in Comanche County District Court.

Ishman, 32, of Lawton, was charged with felony counts of assault and battery with a dangerous weapon and conspiracy to commit assault and battery, records indicate.

Wynn, 19, was charged with a count of conspiracy to commit assault and battery with a dangerous weapon, and Riss, 26, of Lawton, was charged with possession of contraband by an inmate.

Ishman, Riss and Edward Rendardo Brown, 50, were charged Sept. 22 with first-degree manslaughter for taking Matthew Jones, 30, into a cell in the jail on Aug. 16 where he was beaten to death. According to the probable cause affidavit, Jones suffered several hemorrhages and hematomas.

Wynn had been slated to be sentenced Wednesday for an August 2022 felony charge of second-degree burglary, records indicate. He is being held on $100,000 bond for the latest charges.

Riss, who has a November 2022 felony conviction in Comanche County from November 2022 and received a two-year suspended sentence, had been awaiting sentencing after pleading guilty July 12 for a misdemeanor charge of possession of drug paraphernalia. He received a $100,000 bond for the September manslaughter charge and an additional $200,000 bond for the latest count.

Ishman, who has an October 2012 felony conviction in Richmond County, Georgia, for a count of robbery, has been in the jail on $50,000 bond after his initial appearance in May for a felony count of assault and battery with a dangerous weapon after, investigators said, he beat a man with a crowbar. His bond for the manslaughter case was set at $100,000 and the latest charge’s bond was set at $500,000.