What a tragedy.

Jamie Sangouthai, 37, who was close friends with Lamar Odom and frequently appeared on Khloé and Lamar, has passed away.

Jamie was part of the Kardashian inner-circle for years, and friends with the NBA free agent since high school. Khloé Kardashian, 30, posted a tribute to her fallen friend on Twitter on Sunday.

Her pal Malika Haqq followed suit on her Instagram account.

TMZ reports he passed away on Sunday at a downtown Los Angels hospital following an apparent heroin overdose. Khloé had reportedly accused Jamie in the past of fueling Lamar's alleged drug problem.

Our thoughts are with his loved ones at this time.