An artist's impression of a suspected attacker has been released by police investigating the rape of a young girl.
The rapist was said to be wearing a ring bearing the word "Boyz"
The child - who is aged between five and 10 years old - was attacked as she slept in her bedroom on a housing estate in Basildon, Essex on Wednesday.
A police spokeswoman said while it was unusual to issue an impression of a suspect, it was the best way to get evidence from children of this age.
Police are urging anyone who recognises the man to contact them immediately.
Head teachers of schools in the area are being sent letters by police explaining the situation and offering support.
The rapist has been described as black, aged 18 to 20, with dirty teeth and wearing a ring bearing the word "Boyz".
The victim also described him as skinny, wearing a grey top with dark writing and loose-fitting, ripped trousers, probably designer.
Police have stepped up patrols in the area and a mobile police unit remains nearby.
Items have also been sent to the laboratories for DNA testing. The results are expected later this week.
Supt Caton could not rule out that the black community could be asked to provide DNA samples.
Detectives said they were also liaising with forces across the country to help them find any leads.
The case is being treated as stranger rape because the victim did not recognise her attacker.
There was no forced entry into the home, but police refused to comment further.
The girl's mother, her three siblings and two other children were asleep in the house at the time. It is thought they were having a sleepover.
The incident shocked neighbours who said the area had been plagued by crime.