MISSING Amelia Bambridge's backpack has been found on the beach where she was last seen.

Volunteers and police who set up a search party found the pink and black flowered rucksack as they scoured the Cambodian holiday isle of Koh Rong where she was staying.

The Argus:

But they have found no trace of the 21-year-old from Worthing.

Amelia is on a gap year and was last seen by travelling companions at a beach party at 3am on Wednesday.

She has now been missing for four days. 

The Argus:

Concerns have been raised that the 40-minute path back to her youth hostel, Nest Beach Club, from the beach party where she was last seen, was poorly lit. 

Cambodian Police are now scouting the jungle, mountains, creeks, beaches and all places Miss Bambridge had visited, enlisting help from their diving teams.

The Argus:

Today, police have released images of the former Bhasvic student's backpack and belongings which were found on the beach. 

The Argus:

There is also an image of her passport, which remains at her hostel. 

Media in Cambodia has reported the island's deputy police chief Nop Panha as saying that, previously, another visitor to the area "went out in the forest for four days" but had returned safely.

Miss Bambridge was due to check out of her youth hostel at noon on Friday to leave the island later in the afternoon with a friend.

But ten hours later, at 10pm local time, her mother Linda was told by the hostel’s manager that her daughter had “been declared officially missing”.

As she prepared to leave the family home in Worthing yesterday, Ms Bambridge told The Argus: "I have got numbers of people to contact in Cambodia. 

The Argus:

"I'm going to Bangkok, getting another flight to the country, then transport from the capital to the coastline.

"From there I will get a ferry, hopefully arriving at 2pm tomorrow afternoon local time."

Her mother is hoping that Amelia got "lost on her way back" and the search party will be able to find her.

Amelia's sister Georgie, 19, is close to her and said Amelia would message the family whenever she had wifi. 

She said: "She is strong minded, really sensible and very organised.

"She spent the last year Googling solo female travelling, looking at pages and blogs and sorting out everything. 

"I'm just in shock, she has never done anything like this before.

"I spoke to her Wednesday and she normally messages us every now and then, every time she got wifi.

"I told her to put loads of pictures online to see what she was up to.

"It's horrendous but we need to be positive and she needs to be found."

Amelia left the UK last month after completing an apprenticeship.

It is her first time travelling on her own.