ROCKWALL, Texas (AP) A Rockwall County grand jury indicted a 19-year-old man on charge of criminally negligent homicide, accusing the teenager of providing a 16-year-old girl with a fatal dose of "cheese" heroin.

Timothy J. Salahi, 19, was indicted Wednesday in connection with the Sept. 17 death of Paige Elliott.

Salahi is accused of buying Paige cheese heroin, a combination of black tar heroin and ground up cold medicine. Toxicology tests later showed she had cheese heroin as well as ecstasy, Xanax, cocaine and marijuana in her system.

At least 40 people in the North Texas region have died from cheese overdoses since 2004, authorities said. Authorities have filed murder charges in Dallas and Irving against people who have sold cheese to youths who have died from overdoses.

A Rockwall County prosecutor said she hopes the Salahi indictment serves as a warning to people who take or sell cheese heroin.

"If it also has a deterrent effect on others who are providing drugs to children, that's an added bonus," said Stephani Hudgins Woodward, chief felony prosecutor in Rockwall County. "But first and foremost, we did this because we think he broke the law."

Information from: The Dallas Morning News,

Copyright 2008 The Associated Press.