Not sure yet but it has been reported by some news sources
Asif gets one-year IPL ban for positive dope test
Pakistani pacer Mohammad Asif was on Friday banned for one year by the Indian Premier League (IPL) for a positive dope test.
Asif’s agent Salman Ahmed confirmed the ban and said Asif will now concentrate on his training in a bid to play for Pakistan later this year.
Asif has been banned for a year, starting Sept 15, 2008, which means he would be eligible to play international cricket ahead of the ICC Champions Trophy which is scheduled in Pakistan from Sep 24.
SOURCE: Asif gets one-year IPL ban for positive dope test- Hindustan Times