An O'ahu man faces a mandatory minimum prison term of 25 years without the possibility of parole after a federal grand jury returned guilty verdicts against Allan Aquino Lafuente on drug and firearm charges.

Lafuente, 39, was found guilty of one count of conspiring to distribute and to possess with intent to distribute 50 grams or more of methamphetamine; two counts of distributing five grams or more of methamphetamine; one count of possessing with intent to distribute 50 grams or more of methamphetamine; and one count of carrying a firearm in connection with a drug trafficking offense.

The offenses occurred in late 2005 and early 2006, according to U.S. Attorney Ed Kubo.

Lafuente faces such a stiff term because he has a prior state felony drug conviction and because the amount of methamphetamine involved calls for a mandatory minimum sentence of at least 20 years, with a maximum penalty of life in prison, Kubo said.

Lafuente's firearms conviction also calls for a mandatory, consecutive prison sentence of five years.

He is scheduled to be sentenced before U.S. District Judge David Alan Ezra on July 27.

Lafuente distributed or assisted in the distribution of approximately two ounces of methamphetamine to an undercover police officer on two separate occasions, according to evidence presented at his trial. Lafuente also met with the undercover officer to sell another two ounces of methamphetamine, Kubo said.

During a search of Lafuente's van, a loaded semi-automatic pistol and 78 rounds of ammunition were found, Kubo said.