CCTV shows the last moments of yoga instructor Aqua Chow leaving her home on June 29 with her ex-boyfriend who has been arrested on suspicion of murdering her in Hong Kong.

Zhou Huixian, also known by her nickname Aqua Chow, 23, was scheduled to fly to the U.S. on June 30 to take a dream three-month yoga training course but failed to show up to board the plane.

Her worried father had been unable to contact her since the night before her trip and reported her missing to the police.

He visited her apartment, seen on the CCTV video, in the Sham Shui Po neighbourhood of Kowloon in Hong Kong on June 30 but only became more distraught when he discovered that Aqua had left her luggage in the room.

Aqua's former lover Lao Nan, 28, handed himself in with a lawyer at the Wong Tai Sin Police Station later the same evening. He is said to have refused to talk but only handed over the hotel key card.

Police found Aqua's body reportedly in a blood-covered hotel room at the Ritz Carlton in the Tsim Sha Tsui district in Kowloon.

Officers remanded the murder suspect in custody while they question him and collect more evidence from Aqua's apartment and his property as well as the building where she was found dead.