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A man from Hong Kong is alleged to have murdered his girlfriend before stuffing her corpse into a suitcase, which he then wheeled out from a hotel which the two had checked into the previous evening. Watch CCTV footage from the case below:
A couple of months prior to her death, the young woman had posted online: "He said I'm his first and his last girlfriend."
The body of the victim, named as Hong Kongese national Poon Hiu-wing, 20, was found by police in the Taiwanese capital Taipei on 13 March, after family members had reported her missing on 5th March.
Her boyfriend, Chan Tung-kai, 19, has been named as the prime murder suspect. He returned to Hong Kong alone on 17 February - the same day he allegedly suffocated his lover to death using a pillow inside their Taipei hotel room.
Police in Hong Kong tracked him down and arrested him for theft on 13 March after finding the deceased's woman's bank card on him.
Following interview, Chan Tung-kai revealed information which was eventually passed to Taipei police.
They found the victim's body near Taipei Metro's Zhuwei Station.
Investigations have revealed that the couple travelled to Taiwan for a Valentine's Day trip starting 8 February, with footage showing them checking into the Purple Garden Hotel just after midnight on 17 February.
The following morning, however, Chan Tung-Kai was documented leaving the hotel alone with a suitcase. The suitcase is believed to have contained Poon's body.
Security footage also shows Chan pushing the suitcase through a crowded metro station moments before allegedly disposing of his girlfriend's corpse.
Poon, who also went by her English name 'Amber', is being remembered on social media, where her final public post - dated 15 November - read: "He said I'm his first and his last girlfriend."
Both are officially part of China, but independence campaigners in Taiwan recognise the state as an independent country.
It is now understood that a special, provisional law may need to be created for the purposes of this case, in order to reach agreement on extradition.
New Taipei City Police Department officer Hou You-ren said: "The victim's father came to us on 12 [March] saying his daughter's card had been used in Hong Kong to withdraw 20,000 HKD (£1,800 / $2,550).
"We thought this was odd because his daughter had not flown back to Hong Kong. We discovered this by checking with immigration officials, who confirmed that she had not left Taiwan.
"After that we found CCTV footage from the hotel they stayed at."
Investigator Liao Wei-sheng added: "After the suspect abandoned the victim's corpse near the metro station, he took the empty suitcase to a shopping centre and discarded it there."
Taiwanese authorities have requested that Chan be extradited back to the Taipei to face charges, but the case is proving to be a legal puzzle for police forces in both Taiwan and Hong Kong
There is no extradition agreement between the two, which have complex legal systems due to their political status.
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