Fox 29 in Philadelphia reports Dion Waiters' brother was one of six people killed on Tuesday in three separate acts of violence. 

Waiters won't be with the Oklahoma City Thunder when they play the Los Angeles Clippers on Wednesday.

Waiters posted to his Instagram account about the death of his brother, saying, "The call I just got about my lil brother wasn't expecting this s---.....crushed my heart I never question why.... But this hurt.... I promise I got Yu mark my word..... Love Yu kid... r.i.p."

The Thunder organization has experienced a difficult recent few weeks with assistant coach Monty Williams' wife being killed in a multicar accident on Feb. 9, and part owner Aubrey McClendon dying in a single-car crash on March 2.