An ongoing investigation into a U.S. prescription-drug ring linked to the recently deceased Canadian actor Corey Haim has yielded an arrest, just days after the former teen idol was laid to rest in Toronto.

Haim died March 10, after collapsing at an apartment complex in Burbank, Calif.

His mother phoned 911 and spent 10 minutes on the phone with a dispatcher, trying to save her son's life.

He was only 38 years old and had been suffering flu-like symptoms prior to his death.

A post-mortem examination showed that Haim had an enlarged heart and water in his lungs at the time of his death. An L.A. coroner is awaiting the results of toxicological tests, however, before determining the actor's cause of death.

Days after Haim's death, California Attorney General Edmund Brown announced the ongoing investigation had identified an unauthorized prescription in the late actor's name.

Yesterday, Brown's office confirmed that the investigation into the prescription-drug ring had resulted in an arrest, but no further details were released.

Haim had been battling drug addiction for much of his adult life, though it is still not clear what role, if any, drugs played in his death.

But he once told CNN's Larry King in an interview that he expected he was going to be "a chronic relapser" for the rest of his life.

Dr. Joseph Lee, a physician who works for Hazelden Treatment Centers, said young people often abuse prescription drugs, principally because they have access to them through their friends and family. Such addiction problems can follow addicts into their adult years.

"If you look at the demographics of people who are abusing prescription drugs, the great majority of them are in the 12-to-17 and 18-to-25 category," Lee told CTV's Canada AM during an interview from Minneapolis on Thursday morning.

"And Corey Haim's story is really about youth and addiction. He passed away at the age of 38, but his addiction problems really began as a teenager."

Born and raised in the Toronto area, Haim rocketed to fame in the 1980s when he starred in a series of Hollywood films, including the Joel Schumacher-directed vampire flick "The Lost Boys."

His career sagged as he got older, and he eventually starred on a reality TV show with Corey Feldman, a close friend and fellow teen heartthrob, who also sought to regain the fame he once held as a young actor.

One of Haim's last big-screen roles was a small part in "Crank: High Voltage" -- the sequel to an action movie starring British actor Jason Statham.

Haim's funeral was held Tuesday morning at Steeles Memorial Chapel, a Jewish funeral home just outside of Toronto.

Though closed to media and other outsiders, a few fans stood outside the funeral home to pay their respects to the former teen idol.

His agent, Mark Heaslip, confirmed to CTV.ca in a brief telephone interview earlier this week that plans are underway to hold a memorial for Haim in L.A. that will be open to the public.

With files from The Associated Press and The Canadian Press