The boyfriend of missing British adventurer Esther Dingley has been quizzed by police for a third time.
Detectives said Daniel Colegate, 38, who reported her missing after she went for a solo hike in the Pyrenees, is a witness and not a suspect.
Esther, 37, vanished last month while trekking alone on the border between France and Spain.
Daniel and their five dogs were at their French address three hours away.
The officer leading the search, Jean-Marc Bordinaro, said: “We interviewed Daniel at the farmhouse where he is living.
"We want to investigate all possibilities...”
He added: “We went to see Mr Colegate so that we could go through social media with him.
"It appears that their lives together were not as happy as the images posted on social media suggest.
“I would like to stress we interviewed Mr Colegate as a witness, not a suspect.”
A hiker who saw Esther the day before she started her trek said she could have “slipped” into a lake.
But Mr Bordinaro said Esther’s disappearance was voluntary or the result of someone else’s actions.
Esther and Daniel, from Durham, have been travelling since 2014.
She was last in touch on November 22.
Their camper van was found in Benasque, Spain, where she started her trek.
It was claimed last night a dog walker saw someone sleeping in it a week after she was reported missing.
