He had recently tested positive for marijuana and had admitted to the charges. He just uploaded a letter of apology. The letter reads:

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This is Choi Seung Hyun (T.O.P's real name).

First of all, I want to apologize with all my heart for disappointing many and causing a controversy through my fault.

I am too embarrassed of myself even to apologize in person... I do not have any excuses and I have many regrets. I am now cautiously writing while I am afraid of everything...

I believe I should be rightly punished for hurting the members, the label, the public, the fans who cherished me, and my family in a way that cannot be fixed. My heart hurts, and I am very disappointed in myself.

I will look back on myself thousands of times and reflect and reflect and think on my actions...

I will not make the same irresponsible mistakes again.

I apologize once again for not being able to go apologize personally one on one to everyone, and I will reflect more deeply.

I am very embarrassed of myself.

I'm sorry.