A federal grand jury charged a Westlake Village man Tuesday with selling the hallucinogenic mushrooms that were taken by a 17-year-old girl who was later hit and killed by a car on the 101 Freeway.

Stephen Thomas Roman, 30, had been in custody in Ventura County since September 2008 on separate charges of selling the drug Ecstasy.

According to a criminal complaint filed Jan. 20, a group of young people, including the girl, Victoria Nugent, were gathered in an apartment complex in Thousand Oaks in August 2004. One person called Roman and requested the drug called "magic mushrooms," which he delivered.

After eating the mushrooms, Nugent began "behaving in a bizarre fashion," according to a statement from the U.S. attorney's office. Nugent's friends attempted to lock her in a room, but she escaped, and while walking naked and disoriented on the 101 Freeway in Newbury Park, she was struck by a motorist and killed.

In a postarrest interview, Roman admitted he was the one who sold the mushrooms. Roman reportedly sold two 2-ounce bags containing the drug and said he warned one of the young male partygoers that the mushrooms were particularly strong.

According to the criminal complaint, Roman told investigators, "(I told the boy) there should be at least a baby sitter. I look at taking drugs as a Boy Scout; you were supposed to be prepared beforehand. . . . Sometimes it takes you not out of control . . . like it takes you to the point to where you don't know what's going on correctly."

Roman also admitted that he didn't think kids under 20 years old would know their tolerance and said he thought mushrooms could "scar" a person for life.

Roman told investigators he had heard about Nugent's death and how it related to the hallucinogenic mushrooms. When they asked him if he left the area after the incident, Roman admitted that he thought he needed to "lay low."

The Van Nuys motorist who hit Nugent wasn't cited. Lloyd Davis, a 43-year-old musician returning from a performance in Santa Barbara, wasn't speeding and didn't see Nugent.

Toxicology reports showed Nugent also had marijuana in her system.

Eighteen-year-olds Brian Mitchell and Alissa Ruef and 19year-old Jonathan Martinez were charged with giving drugs to a minor. The three were at the apartment complex the night of the incident.

Manslaughter charges against Martinez and Mitchell were later dropped. Both pleaded guilty to the drug charge and were sentenced to 270 days in jail, but the sentence was suspended, and they didn't serve any time, according to the Ventura County District Attorney's Office.

Ruef pleaded guilty to lying to police about events leading up to Nugent's death and was put on three year's probation.

Roman was charged in federal court with distribution of controlled substances, specifically Ecstasy and psilocybin mushrooms, a charge that carries a statutory maximum penalty of 20 years in federal prison.

Roman remains in custody with bond set at $250,000. His arraignment is set for Feb. 17. He faces a possible life sentence.