Steve Phillip Gilbert Collins charged with manslaughter in Jordynn Atkins-Materi’s death
Jordynn Atkins-Materi, 16. (Simply Cremations photo)
CALGARY, Alta., — A 40-year-old Calgary man has been charged with manslaughter in connection with the fatal drug overdose of a 16-year-old girl in November 2025—marking the first time the Calgary Police Service has laid such a charge in relation to an overdose death.
On June 25, Steve Phillip Gilbert Collins, 40, of Calgary, was taken into custody. He faces one count of manslaughter and is scheduled to appear in court on July 6.
The victim has been identified as Jordynn Atkins-Materi, whose life was cut short after consuming carfentanil, a potent synthetic opioid described as one of the deadliest drugs in circulation.
According to police, on Thursday, Nov. 27, 2025, two 16-year-old girls met with an acquaintance—a man in his 40s—in downtown Calgary. The group later attended the man’s residence in the 8300 block of Centre Street N.E., where it is believed drugs were consumed.
The following morning, at approximately 7:25 a.m., the man discovered one of the girls unconscious and called 911. Emergency responders arrived quickly but were unable to revive the teenager. An autopsy by the Office of the Chief Medical Examiner later determined the cause of death was the toxic effects of carfentanil.
Following an investigation by the CPS Drug Investigations for Safer Communities (DISC) Team and consultation with the Crown Prosecutor, charges were deemed warranted.
In 2023, the CPS began an OverDOSE pilot project, which utilized drug investigators to maintain consistency in all overdose or drug-related death investigations. In 2025, the Service formalized this pilot project with the creation of the Drug Investigations for Safer Communities (DISC) Team.
The DISC Team targets drug traffickers responsible for selling substances causing overdose deaths, as well as the sale of illicit drugs online. The DISC Team works closely with our existing Drug Undercover Street Team (DUST) to conduct investigations.
Anyone with information about drug trafficking in Calgary is asked to contact police by calling 403-266-1234. Tips can also be submitted anonymously to Crime Stoppers through any of the following methods:
TALK: 1-800-222-8477
TYPE: www.calgarycrimestoppers.org
APP: P3 Tips
Case #: CA25518547/5331
