Southfield police are awaiting toxicology reports before they hand over a final report regarding the death of a 25-year-old man at Northland Mall.
"This is an incident we all wish had not happened," said Southfield Child Eric Hawkins, during a press conference Monday.
McKenzie Cochran died Jan. 28 after a struggle with security at the mall, just north of Detroit.
Hawkins said the final autopsy report isn't in yet, and it likely will take weeks to complete the investigation. Hawkins said the report is necessary to determine if there was anything in Cochran's body that could have contributed to his death or any other underlying medical conditions.
Cochran was pepper-sprayed and restrained by guards after a jewelry store owner felt threatened and called for help.
Hawkins said his department is investigating the use of force by the guards, but would not comment on specifics regarding what the verbal confrontation involving Cochran was.
Watch interview: Mom speaks about son who died at mall
Video aired by Detroit TV stations shows guards restraining a person who says he can't breathe. About 30 people held a protest at the mall last week, demanding an explanation.
Southfield Mayor Brenda Lawrence said she wanted to make it clear that the case was not centered on race or any type of cover-up. "We want it investigated. We want everyone to feel safe," she said.