Police have launched a murder hunt after a 28-year-old woman's body was found in a hotel room in Cardiff, South Wales.
Staff found Nadine Aburas in the Future Inn hotel, Hemingway Road, at around noon on New Year's Eve.
Officers are searching for suspect Sammy Almahri, 44, an American national who was in a relationship with the victim.
They described him as "very resourceful" and "dangerous", and say he has distinctive facial injuries, which are unrelated to the incident.
Ms Aburas' family said in a statement: "Nadine was a lovely, bubbly girl and unique and talented woman.
"She always wanted to help people and everybody loved her. She has left such a massive hole in our family and we will miss her so much."
South Wales Police said they are awaiting further pathology tests before confirming how she died.
Almahri, who lives in New York, arrived in the UK on Boxing Day and travelled to Cardiff on 28 December.
He checked into the hotel at 8.25pm on 30 December. Ms Aburas, from Cardiff, arrived at around 9pm that evening.
Almahri left the building at 3am the next morning and travelled to London.
He took a flight from Heathrow to Bahrain at 10.30am on New Year's Eve - and may now be in Tanzania.
Detective Superintendent Paul Hurley said: "The hotel was busy with people who were in the city to celebrate Christmas and New Year's Eve.
"People will have seen them together, or on their own, and I would urge them to come forward.
"While we have not yet made any arrests, we have a team of officers who are trying to trace Sammy Almahri, and now believe he is in Tanzania.
"We have been working closely with our counterparts in both NYPD and police officers in Tanzania.
"From our inquiries we have discovered that Almahri is very resourceful and has access to funds, which may further assist his evasion from law enforcement agencies.
"I consider this man to be a dangerous individual and would advise that any knowledge of his location or sightings of him are reported immediately to the authorities - and he is not to be approached."
