Mohammad Asif tested positive for a banned substance during the Indian Premier League, organisers have confirmed.

IPL commissioner Lalit Modi had acknowledged earlier on Monday that a player had failed a doping test during the Twenty20 tournament.

The culprit has now been identified as Pakistan fast bowler Asif, who played for the Delhi Daredevils franchise.

"The Indian Premier League compared the result from the WADA-approved laboratory in Switzerland with the data collected by IDTM, the Sweden-based independent agency which organised the anti-doping testing in accordance with World Anti-Doping Agency (WADA) standards, to confirm the player in violation is Mr Mohammad Asif," the IPL said in a statement.

The failed test is the latest setback for Asif's injury-plagued career.

He spent almost three weeks in detention in the United Arab Emirates on charges of illegal drug possession after being stopped at Dubai International Airport on his return home from the IPL.

The charges were not pursued by the Dubai authorities on June 20, with public prosecutor Mohamed Al Nuami explaining: "The case has been dropped against Mohammad Asif due to insignificance... He will be deported as soon as the police finalise the procedures.

"It is definite that he committed the crime of smuggling and possessing 0.24 grams of opium as he was caught red handed... However in certain cases and for a faster litigation process the public prosecution drops a case due to insignificance and deports the suspect."

The 25-year-old was also sent home from the 2006 Champions Trophy after testing positive for nandrolone in internal tests carried out by the Pakistan Cricket Board.

He initially received a one-year ban from the PCB for that offence, but it was overturned on appeal.