Ann Barnes, Police and Crime Commissioner for Kent: "I take responsibility for everything that happens on my watch, good or bad.
"It is personally sad for Paris and her family. An enthusiastic young woman with exceptional skills and a proven track record in working with young people has ended up in a position where she has turned down the job of a lifetime for her.
"There have been calls for me to resign I am not a quitter by nature. Some have said that this has damaged by reputation To them I say this: reputations are made as much by your actions when things are tough.
"We worked with the best of intentions but sadly on this occasion it hasn't worked out".
Reporters have been invited to a press conference to discuss Kent Youth Police and Crime Commissioner Paris Brown's future, it's been announced.
Ann Barnes, Kent Police and Crime Commissioner, will be giving a statement on the Youth Commissioner post.
The announcement follows calls for 17-year-old Miss Brown, Britain's first Youth Police and Crime Commissioner, to step down just a week after taking the post.
She has apologised for what she describes as her "use of inappropriate language" following complaints after Tweets she posted between the ages of 14 and 16.
The press conference will take place at 3pm.
Police are investigating social media messages written by Britain's first youth police and crime commissioner following complaints by the public.
Kent police officers will decide whether Paris Brown, 17, has committed any offences in writing apparently racist, violent and anti-gay tweets.
The teenager has apologised for what she describes as her "use of inappropriate language" for the tweets which she posted between the ages of 14 and 16.
Tonight the force said: "Kent Police has today received a number of complaints about statements posted on social media. Kent Police officers are investigating circumstances to determine whether any offences have been committed."