WATCH: Tragic Ana uploaded this video to YouTube a day before she vanished

Footage has emerged of a video that tragic murder victim Ana Kriegel uploaded the day before she went  missing.

The schoolgirl (14) regularly uploaded videos on YouTube like many teenagers.

The video, which lasts almost one hour, is dated as Sunday, May 13 - a day before the last known sighting at 5.30pm on Monday.

In the footage, Ana appears her normal, happy self as she chats to the camera from her bedroom before moving around her house.

Watch the Video here: https://m.youtube.com/watch?v=oBIvd4WF4MU&t=481s

Teenage boys 

Gardaí investigating the murder of have interviewed two teenage boys who were the last people known to be with her on the day she disappeared.

They are exploring a sexual motive for the murder of schoolgirl and believe DNA evidence will help catch her killer.

She left her home on the day she disappeared after a teenage boy known to her called to her home, and later met up with another teenager. The first boy then left and she remained with the second teenager.

The second boy has told the gardaí that he then went home, and that is the last piece of information the authorities have as to her movements.

The body of the Leixlip schoolgirl was found in a derelict farmhouse just outside Lucan, Co Dublin, at lunchtime on Thursday.

She had been dead for some time and gardaí believe she was killed just after the last known sighting of her at about 5.30pm on Monday.

It is believed she was beaten to death.