A Maui man serving a 20-year prison term for a federal drug conviction had his sentence shortened when it was commuted by then-President Barack Obama.

Alfred Kemfort, 49, had been sentenced in March 2006 in U.S. District Court in Honolulu after he pleaded guilty to possession with intent to distribute 50 grams or more of methamphetamine.

According to court records, Maui police obtained search warrants after a confidential informant bought methamphetamine from Kemfort in a purchase monitored by police. The informant “subsequently observed a large quantity of methamphetamine in Kemfort’s residence,” according to a court document.

The indictment charging Kemfort was filed in June 2004.

Attorneys who represented Kemfort in his case, including an unsuccessful appeal after he was sentenced, couldn’t be reached for comment Friday.

Under the executive grant of clemency Thursday, Kemfort’s prison term was commuted based on his enrollment in a residential drug abuse treatment program. His prison term had been set to expire Jan. 19, 2019.

The commutation left intact the part of Kemfort’s sentence imposing 10 years of supervised release.

According to the Hawaii Criminal Justice Data Center, Kemfort was convicted of two counts each of third-degree promotion of a dangerous drug and possessing drug paraphernalia, as well as second- and third-degree promotion of a detrimental drug in 2nd Circuit Court cases stemming from his arrests in 1996. In January 1998, he was sentenced to a five-year prison term for those convictions. His parole was revoked and he was resentenced in January 2000.