Police are investigating if a romantic obsession is behind the fatal stabbing of a British backpacker in Home Hill, Queensland, killing one and injuring another.

France national Smail Ayad, 29, was reportedly deeply in love with his victim Mia Ayliffe-Chung, 21, telling other backpackers the pair was married.

The Townsville Bulletin reported his obsession became violent when hearing Ms Ayliffe-Chung posed for photos in a magazine and did not reciprocate his love.

He then allegedly entered her Shelley’s Backpackers room and stabbed her multiple times while yelling “Allahu Akbar” (God is greatest).

Friend and fellow backpacker Thomas Jackson, 30, who bravely came to her aid is now fighting for his life after receiving horrific injuries.

Mia Ayliffe-Chung was having a ball in Australia. Photo: Facebook.

He was stabbed multiple times in the face, chest and stomach.

A employee at the Home Hill hostel was also cut in the leg.

Ayad reportedly injured two police officers as they transferred him from hospital into custody on Tuesday afternoon.

Officers were forced to use pepper spray to subdue him.

He was also said to have lashed out when police tried to arrest him at the scene, requiring his legs and hands to be handcuffed.

Mia a kind, peaceful, fun woman

Ayliffe-Chung’s stepfather Stewart Cormack has joined those paying tribute to her open-minded compassion and adventurous spirit.

Mr Cormack fought tears during an interview on British TV, while describing his step-daughter as a beloved daughter with an adventurous spirit.

“Mia was a rare person who saw beyond race, creed and belief. She would always treat others with dignity, respect and kindness.”

“Just seeing her outward appearance could not give you an inkling of how wonderful she was emotionally, socially and mentally.

“As a peaceful person Mia had huge respect for everybody.”