Britain's first youth crime commissioner Paris Brown is stepping down from the role following the publication of messages she wrote on Twitter, she has announced.
Kent Police, the force which employed her, is still investigating whether the teen committed any offences in writing apparently violent, racist and anti-gay comments on her Twitter feed.
Speaking at a press conference in Maidstone, Kent, Miss Brown said she had "taken the decision to decline the offer of the position" as she felt recent media attention would affect her ability to carry out the job.
She added: "I am truly sorry for any offence I have caused."
"I strongly reiterate that I am not racist or homophobic. I have fallen into the trap of behaving with bravado on social networking sites. I hope this may stand as a learning experience for many other young people.
"Finally, I ask for the time and space to recover from what has been a very difficult time and to allow me to move on."
The teenager, appointed to the £15,000-a-year role last week, posted the messages between the ages of 14 and 16 and has apologised for causing offence through what she described as her "use of inappropriate language".
But many had continue to call for her resignation since the hate-filled tweets were published by the Mail on Sunday.
The 17-year-old announced her resignation at a press conference in Maidstone alongside Ann Barnes, Kent Police and Crime Commissioner. Brown's Twitter account, @YouthPCC, has also been shut down.