Detectives in Huddersfield are appealing for information after a violent robbery.
The incident happened on Friday 19 August between 18:30 and 19:20 when the male victim was walking along Trinity Road and asked a group of five men for directions.
The group offered him a lift home and walked him down an alleyway onto Queen Elizabeth Gardens where they demanded money and his phone - he refused and they assaulted him.
The 19-year-old victim was kicked and punched and fell unconscious. The suspects stole his belongings, including an IPhone 5, 50 Euros and £200 plus a wallet and bank cards and fled the scene.
The first suspect is described as a white male, early 20s, 6ft 3", athletic build, short brown hair, trimmed beard, dark brown eyes. He was wearing black Adidas tracksuit bottoms and dark zip-up hooded top.
Another is described as a white male, around 30-years-old, 6ft 2", slim build, short dark hair, piercing on his right eye, a tattoo on his neck of a flower blossom. He was wearing blue shorts and a white short sleeved shirt.
The third male is described as white, around 26-years-old, 5ft 9", athletic build, and short black hair. He was wearing dark tracksuit bottoms rolled up to his knees and there was a 'X' sign on the front. He was also silver bracelet and a large black watch and had a large black tribal tattoo on his right shin.
The fourth suspect is described as a white male, around 20-years-old, 5ft 8", athletic build, short dark hair and had a pierced eyebrow. He was wearing dark coloured trousers and a dark zip up hooded jumper.
The fifth male is described as white, early 20s, 6ft 2", athletic build, short black curly hair. He was wearing a black tracksuit, white fabric bracelet with a silver colour cross chain.
Detective Constable Mike Smith, of Huddersfield CID, said: "The 19-year-old victim was left unconscious on the floor by this group of males after a violent robbery and we are appealing to the public to help us find the individuals who subjected him to a terrifying assault.
"Anyone with any information about any of these five men or saw anything on the night which could help our investigation, I would urge you to contact myself at Huddersfield CID, on 01484 436 745 quoting reference 13160358180."

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