The season four finale of FBI was pulled from screens in a last-minute scheduling shake-up.
MORE: NCIS teases huge change for season 20 - and fans will not be happy
CBS made the decision not to air the episode - which was to center on a school shooting - in light of the tragedy at a Texas elementary school on Tuesday 24 May, which is the deadliest US school massacre since Sandy Hook.
WATCH: See the trailer for the FBI finale
The episode, titled Prodigal Son, was scheduled to air at 8pm on Tuesday night.
Per the official episode synopsis, as the team investigates a deadly robbery that garnered a cache of automatic weapons for the killers, "they discover one of the perps is a classmate of Jubal's son, who is reluctant to cooperate with the case."
MORE: Chicago Fire, The Rookie and Grey's Anatomy: What shows have the networks renewed or canceled?
MORE: Chicago Fire fans pay emotional tribute following sad death of show's beloved dog
In place of the finale, CBS instead aired a rerun from the current season.
There's no news as to when or if the episode will ever make it to screens.
© CBSThe episode was to center on a school shooing
The official synopsis for the rerun reads: "Maggie goes undercover working in a bar to investigate an anti-government group that regularly gathers there and has several members suspected in a series of bombings. The case opens old wounds for her when a single father on the periphery of the group begins to fear he's in danger of becoming collateral damage."
Meanwhile, spinoffs FBI: International and FBI: Most Wanted aired their respective finales as as usual in their scheduled spots at 9pm and 10pm.
MORE: The reason why this controversial Law & Order: SVU episode was pulled from screens will shock you
On Tuesday morning, 19 children and two teachers were killed after a gunman opened fire at Robb Elementary School in Uvalde, around 80 miles west of San Antonio.
The gunman, who has been named as 18-year-old Salvador Ramos, entered the school with a handgun and rifle after earlier shooting his grandmother. He was shot dead after committing America's deadliest school massacre in nearly a decade.
Read more HELLO! US stories here
Like this story? Sign up to our What to Watch newsletter to get other stories like this delivered straight to your inbox.
