Thanks for your <mod snip> and alert. The link to the information you snipped was posted on page 2 post #30
MO - Off-duty officer shot dead by on-duty officer at latter's St. Louis home, Jan 2019
The MSM link is
Criminal charges filed against officer in Katlyn Alix’s death
"...Hendren and his partner are 29-years-old and have been with the department for nearly two years, St. Louis Police Chief John Hayden said. ..."
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HOWEVER, as usual, the MSM is slippery with facts, and Hellmeier
may not be the partner and may not be the sergeant and may not be 29 years old. SO THANK YOU.
*SHEESH* my upthread posts are illogical
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NPR - PBS says that the partner has not been named:
Fatal End To An Alleged Game Of Russian Roulette For St. Louis Police Officer
"... Hendren's partner,
who has not yet been named, was also present during the game, according to the statement. ..."
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Per ABC News, Sgt Hellmeier, who wrote the probable cause statement, is actually an investigator from IA:
St. Louis police officer charged with killing fellow cop in Russian roulette-style shooting
"... The statement was provided by
Sgt. Richard Hellmeier, an Internal Affairs investigator, after interviewing a third officer who was on-duty and with the two at the time of the shooting.
The third officer has not been named...."
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Maybe my brain is getting too old.

I thought Hellmeier the Sgt was also the partner present at the scene. I wish the media would only add updates and not change articles.