Producers behind Nathan Fillion's hit U.S. crime drama Castle have postponed an upcoming bomb-themed episode out of respect for the victims of the Boston Marathon attacks.

Three people were killed and over 100 others injured on Monday (15Apr13) when two bombs exploded near the finish line of the annual race, sending the Massachusetts city into chaos amid fears the blasts were part of a massive terrorist plot.

Now network bosses at ABC have pushed back an episode scheduled to air one week after the tragedy (22Apr13), in which Stana Katic's character, Detective Kate Beckett, is forced to try to deactivate a bomb, so as not to be insensitive to the viewers still in mourning.

The episode entitled Still will now premiere on 29 April (13), and alerting fans to the scheduling change on, Katic writes in a post, "Abc Pulls Monday's Bomb-Themed #Castle Out of respect. Please note that the chronology will b (sic) off."