Siddharth, director of the team set up by his father Vijay Mallya, accused her of talking nonsense and went on to say "she was all over me last night and asked for my bbm (blackberry messenger) pin".
Later Siddharth defended his tweet but said that he was not questioning her character but merely stating a fact.
Asked whether his comments would be interpreted as derogatory, Siddharth said, "I am merely stating the truth. I don`t take any comments back. The tweet was in response to what she has said and I don`t think there is anything wrong in that."
"I maintain that if Luke is in wrong he would face the necessary sanctions. I don`t think it is derogatory because I heard that the lady is speaking about beating up her fiance. The guy was not exactly her fiance. Luke is my player and RCB is like one family. So I would of course try and protect my player. But I maintain that I haven`t spoken to him yet", he said.
Pomersbach was arrested for allegedly molesting an American woman and severely beating up her fiance at a city hotel here. "If luke is in the wrong, then trust me he will face the necessary sanctions. But what this girl is doing is idiotic," Siddharth wrote on his twitter page.
"First SRK, now this...everyone loves a good scandal. Why can`t ppl just enjoy the cricket...has everyone forgotten chris` 100 last night? Everyone wants there 15 minuets," he further wrote.
Later, when questioned on the controversial tweet, Siddharth lost his cool and told a mediaperson "dont touch me." When the mediapersons told him that he should not abuse the media, he opened the door of his car and said "I abuse you".
Earlier, while addressing the media, Mallya regretted the incident and promised to extend all help and cooperation to the authorities investigating the matter. "Honestly, this is something I am not fully aware of. I don`t know the full details of what Luke has done or what the incident involves. As my dad had said earlier today, we regret any incident that has happened. We will of course cooperate with the relevant authorities but at this point, I myself don`t know what has happened."
"Look we were all at the after-match party celebrating our fantastic win against the first-placed team in the league. After that, I am not sure what had happened. I woke up this morning and I saw the news and messages on my phone but as I said, I did not get the opportunity to speak to Luke because he is involved in this thing," Mallya told reporters.