Le Tour Traveller's Rest, housed in a former towel factory, is Shanghai's best youth hostel and leaves most of the city's budget accommodation hanging out to dry.

BBC: The sharpest rooms in Shanghai

Police Scotland said the alarm was raised just after 05:00 at the hostel in the Eastgate area of the city.

BBC: Highlands & Islands

The Peruvian National Police earlier told CNN that the manager of a hostel in Pucallpa, where the couple stayed, confirmed to a police investigator they reached the jungle city in early February.

CNN: STORY HIGHLIGHTS