Infernal Affairs – copied from Drohkaal ?

Time magazine carried an article on this hongkong movie Infernal Affairs which has won a lot of awards and is going to be screened in the NY Film Festival this month. Check the storyline out Seemed to me like the crux has been lifted from the brilliant movie “Drohkaal” by  one of India’s best directors Govind Nihalani.  As they say imitation is the best form of flattery.  If anyone has seen this HK movie, please comment.