Police have released this CCTV footage in the hope it will lead them to the vicious robbers who broke a teenager's hand and took her mobile phone.
Four men left Charlotte Harris, 16, in agony after assaulting her in Heaton Street, Blackburn, last month.
The CCTV was released as Charlotte, of Sandy Lane, Accrington, revealed she had suffered nightmares as a result of the ordeal, which has left her too scared to go out alone.
After stealing her phone they assaulted her and broke her hand. They then made off towards, Clayton Street.
Charlotte, a student at Roman Catholic sixth form St Mary's College, Blackburn, said that she had feared for her life.
She added: "One grabbed my arm and twisted it round and forced me to the ground before kicking me in the stomach really hard.
"I was really frightened. I am getting over it slowly but it is going to take time.
"I'm slowly catching up with college work I missed as I have had bad dreams and not slept properly which meant I was too tired to go."
She said her hand injury had been treated, but said her mental scars would take a lot longer to heal.
"I am determined to move on but I will probably be reminded of what happened every time I go out and I will not go out alone."
DC Mark Laing said: "This was a violent and vicious attack on a young girl who was alone at the time."
The four men were all described as Asian. One was stocky with shaved hair at the back and sides, and wearing a dark T-shirt and dark trousers.
Another was skinny, wearing a white beanie hat, a dark jacket and white trousers.
Call police on 0845 1253545 with information.
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