There are two Indian muslims, who were arrested. One in Australia, and the other in the UK. I wrote about the latter, whereas you are talking about the former.
Even talking about the former, the facts are: He was not arrested, because he bought one way ticket. He was arrested because the suspects arrested in the UK made calls to this man, who happened to buy one way ticket. Agree with you that no proof has yet been established against him! If Indian muslims are proclaimed not-guilty, I will be one of the millions, who will be happy.