Two women have been arrested after a female cyclist was stabbed to death in the Anfield area of Liverpool.
Police are trying to identify the cyclist
The unidentified victim was riding a bicycle on Whitfield Road on Friday night when a car pulled up alongside her and an argument broke out.
Witnesses reported that she rode off but the car followed her to Woodville Terrace where two women got out and she was assaulted and stabbed.
The women, aged 25 and 48, have been arrested on suspicion of murder.
They were held after raids at three addresses in the Anfield area.
Merseyside Police are trying to find out the victim's identity.
She is aged between 16 and 20, about 5ft 6in tall, and had dark brown, shoulder-length hair which she was wearing in a single plait.
She was wearing a black Location brand tracksuit and a zipped jacket, a black t-shirt and red, black and silver Nike trainers.
Her cycle was a black and light pink Universal Fusion mountain bike with a black seat.
The woman had "Atalia" tattooed on her right hip, and the name "Demi Lee" tattooed on her right foot with a rose entwined with the letters.
She also had a tattoo of a garland of flowers circling her navel.
Det Ch Insp Richie Davies, of Merseyside Police, said: "This was a vicious and brutal attack on a young woman and I would appeal to anybody who has any information which could help us with our inquiries to contact us urgently.
"I am also anxious to trace anyone who may recognise the victim from the description we have released.
"It may be that you have not seen your partner, daughter, sister or friend since yesterday and if you believe she fits the description we have released I would urge you to contact us."
Officers have been carrying out house-to-house inquiries and the area around the attack was cordoned off.