Swedish state broadcaster SVT has admitted a "huge blunder" after a porn film was accidentally shown in the background of a news bulletin.
The monitor showed Canal Plus' switch to X-rated content
A five-minute news update shown at the weekend included explicit scenes from a Czech porn movie on a monitor behind the anchor Peter Dahlgren.
"This is highly embarrassing and unfortunate," said SVT's Per Yng.
The monitor had been switched by workers who had then forgotten to change it back, he told agency AP.
"It must not happen again," he added.
Usually, the monitor shows the output of other news channels - but the workers had changed it to watch a sports event on cable channel Canal Plus.
However, they did not remember to change the channel back - which, because Canal Plus shows adult content after midnight, resulted in the error.
A producer quickly spotted the sex scenes and ran into the control room and turned off the monitor, news director Mr Yng said.
"One monitor in the background, behind the newsreader, was showing some porn scenes," he said.
"It lasted no more than 30 seconds - only during the first item on the midnight news on Saturday."
While no viewers complained about the incident, he admitted there had been "enormous interest from media."
The show, called Rapport, has been renamed "Rapporn" by Swedish tabloids.
Magnus Akerlund, who oversees the hourly news updates, told Swedish newspapers he was "shocked and dismayed" at the mistake.
"It's a huge blunder by us," he said.