The case is being updated.
The police reported that on Saturday at 9 am a boat on the channel on Twitter was in full swing.
One witness said that two people had left the place and the police had contacted them.
Operations manager Anlaug Oseid in the police district of Trøndelag reports that two boys as witnesses then left the place to be questioned about the fire.
– Two young boys aged 15 years were taken off the site. They have received inhaled smoke and have been sent to a medical check for medical check-ups. There are two boys that we know from the past. We will question them and child welfare issues have been announced, "said Oseid just before 11 am on Saturday morning.
Contact the boat owner
She claims that the police assume that no one else was on board when the fire started.
"We have had contact with boat owners, who say that nobody should be," said Oseid.
Detainee Thomas Buxrud in the police district of Trøndelag previously told that the boat, which is about 25 feet, is taken ashore and is being investigated.
– The boat is completely damaged, but floats. It has no holes in the hull so that it stays on the water. The boat is pulled away from the fireplace, says Buxrud.
No major danger of spreading
Oseid states that the boat will be investigated on Monday.
"There may be poisonous gases on board," Oseid said.
Buxrud says there was no great risk of fire from the fire.
There was a small fire damage on the neighboring boat and it was removed before it caught fire. But there was a lot of black smoke that was clearly visible, says Buxrud.