MIAMI (CBSMiami) – The Miami police department is mourning the loss of one of their own.

Friday morning, Police Chief Jorge Colina tweeted about the passing of Officer Aubrey Johnson who had been with the department since 2015.

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Former Miami police spokesman Delrish Moss, who is currently a law enforcement captain with the Florida International University Police Department, tweeted out that Johnson passed away Thursday from an on-duty injury.

Johnson injured his foot chasing a suspect two weeks ago, according to CBS4 news partner The Miami Herald, which reports he called his mother Thursday evening and said he took medication and didn’t feel well.

His mother rushed to his home to check on him. An unconscious Johnson was taken to Jackson North Medical Center where he was pronounced dead, according to the Herald.

“From my understanding, yes, he made a phone call to his family and when they arrived they found him unconscious,” said Tommy Reyes, the President of the Fraternal Order of Police for the department.

Reyes also told CBS4 the FOP Vice President had spoken with Ofc. Johnson following his injury and he expected to make a full recovery.

Reyes said doctors at Jackson North Medical Center pronounced the 28-year-old officer dead at the hospital. Johnson was a mentor and coach to kids with the Miami Police Athletic League. His mother is a retired dispatcher for the department and his father is a retired staff member.

“His classmates and the people he worked with are just torn to pieces because they said he was such an amazing person,” said Reyes. “He was just a kind, young person.”

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The Medical Examiner is still determining the official cause of death.