The accused friend has been arrested, police said.
A 16-year-old girl was raped by her friend at a park in Begumpur area of Rohini, the police said on Wednesday.
However, the girl had initially alleged that she was gang-raped but after investigation it emerged that she was lying, police said.
The girl went to the park in the area around 9.30 pm on uesday where her 22-year-old friend allegedly forced himself on her, police said.
When the girl returned home, her parents asked her why she got late and in order to save her friend and not get scolded by her parents, she cooked up a story that she was gang-raped, a senior police officer said.
"She alleged that four men raped her in front of her male friend," said the officer.
He said it was only after the CCTV footage of the area was analysed and her friend questioned, that the truth emerged.
The accused friend has been arrested, the officer said. The girl was known to the accused for around a year as he worked near her house, he added.