Grieving mourners shocked by footage of hardcore pornography accidentally played mid-funeral.

A young family was tragically torn in half in a New Years’ Eve accident. Then, a sick slip-up derailed the ceremony commemorating their lost members.

Hundreds of people packed into the funeral of 33-year-old father Simon Lewis and his baby boy were shocked when a pornographic video was played accidentally during the service.

And it took staff four minutes to turn off the loud video.

Mr Lewis was killed in a head-on collision in Cardiff. His three-year-old daughter and pregnant wife survived.

But days later, after concern that the unborn baby was in distress, the boy – named Simon Lewis Jnr – was delivered. He died later that same day.

At the joint funeral, instead of a tribute made to remember Mr Lewis, the pornographic footage was played.

“It was absolutely disgusting, the priest turned around to play the video of Simon, but instead a hard-core pornography video was played on the big screen,” a funeral-goer told Wales Online.

“Everyone was in shock, Simon’s father-in-law was furious, he shouted at the staff present and told them to turn it off.

“It took them nearly four minutes to turn it off, people couldn’t believe what they were seeing.

“To the priest’s credit he handled it extremely well. He apologised on behalf of Cardiff Council and said that in 30 years of doing the job, he had never seen such filth.”

Reverend Lionel Fanthorpe said he looked up at the screen and saw a video with a “very loud noise”.

“I look at my congregations instead of the TV screen, but when I heard this noise and members of the congregation moving towards the screen, I realised something was wrong.

“Members of the family were very distressed, and Simon’s father-in-law was desperately upset.”

Cardiff Council, which runs the crematorium, has launched an urgent investigation.

A spokesperson apologised to the family and mourners and said it is possible the television screen may have picked up a broadcast via Bluetooth or WiFi by accident.

“We are clear that it isn’t possible for any member of staff to play or download anything on the computer that links to the screens in the chapel,” the spokesperson said.

“The screen has now been completely disconnected until audio visual engineers carry out a thorough investigation.”

A 29-year-old man has been charged with causing the deaths by dangerous driving.