The communications regulator ruled that an episode of the programme aired on ITV1 on 8 November at 4pm was in breach of rules aimed at protecting children from viewing inappropriate programming.
The episode was the second part of the story, The Electric Vendetta, which Ofcom said featured burnt dead bodies, electrocutions and a car crash in which a man was thrown violently through a windscreen.
Channel Television, which produces this series on behalf of ITV1, said the scenes in question were not "explicit or gruesome".
Ofcom noted that Channel Television had sought to make the episode suitable for an afternoon audience, but ruled that "there were a relatively large number of violent images that when taken together made it inappropriate for a 4pm slot, when a significant number of children are available to view".
In September, Ofcom upheld complaints about two separate episodes of Midsomer Murders shown in the same weekday slot.
The episode was the second part of the story, The Electric Vendetta, which Ofcom said featured burnt dead bodies, electrocutions and a car crash in which a man was thrown violently through a windscreen.
Channel Television, which produces this series on behalf of ITV1, said the scenes in question were not "explicit or gruesome".
Ofcom noted that Channel Television had sought to make the episode suitable for an afternoon audience, but ruled that "there were a relatively large number of violent images that when taken together made it inappropriate for a 4pm slot, when a significant number of children are available to view".
In September, Ofcom upheld complaints about two separate episodes of Midsomer Murders shown in the same weekday slot.