Convicted rap mogul Sean Diddy Combs has written a letter to the judge overseeing his criminal trial, asking for leniency during his sentencing on Friday and blaming his past behaviour on drug addiction.


In the four-page letter, he apologises for all of the hurt and pain that I have caused and says that he has been reformed after spending 13 months in a Brooklyn jail.


The letter on Thursday comes hours ahead of his sentencing hearing at 10:00 ET (15:00GMT) on Friday.


In July, he was found guilty of two prostitution charges and now faces up to 20 years in prison. Prosecutors are seeking a sentence of at least 11 years, but Combs' lawyers are asking that he be released later this month.


In his letter to Judge Arun Subramanian, Combs apologises for assaulting his ex-girlfriend, singer Casandra Ventura, writing: I literally lost my mind.


I'm sorry for that and always will be, he continues. My domestic violence will always be heavy burden that will have to forever carry.


He also apologies to an anonymous woman who testified during the trial under the name Jane and says he became lost in the drugs and the excess.


I lost my way, he wrote. My downfall was rooted in my selfishness. I have been humbled and broken to my core.


Combs' accusers have also written to the judge, describing how he wielded his power and influence to ruin their lives, and their fears that he would seek revenge if freed.


She added that she believes he deserves a long sentence, writing: He has no interest in changing or becoming better. He will always be the same cruel, power-hungry, manipulative man that he is.


In his letter, Combs describes teaching a class to fellow inmates on what I did to become a successful businessman, describing himself as a changed person who is now sober for the first time in 25 years.


Combs is also expected to speak in court on Friday before the judge issues his sentence. Four of his lawyers are also slated to speak, and his defence team also plans to show a 15-minute video. It's unclear what the video may include.