Baltimore Police Officer Sean Suiter was fatally shot in the head on November 15 and now questions are being raised about whether foul play was involved.

The 43-year-old was soon to testify against his fellow officers who were indicted for a drug-running scheme. According to the Baltimore Sun, authorities say there is evidence of a struggle.

Suiter, an 18-year veteran with the force, was a homicide detective at the time of his murder and was scheduled to testify before a grand jury over a case that alleged cops in his city had conspired with Philadelphia police to sell heroin and cocaine. According to Philly.com, the drugs that were to be sold allegedly came from the streets of Baltimore after they were seized by law enforcement.

Kevin Davis, the Baltimore Police Commissioner, claims there is no link between Officer Suiter’s death and the drug-running indictment.

“The BPD and the FBI do not possess any information that this incident is part of any conspiracy,” Davis told the Sun, and also claims Suiter was “just doing his job on behalf of the city.”

Sean Suiter was shot at around 4 pm on November 15 after approaching a suspicious man in Harlem Park. He would die the next morning from wounds he sustained.

Authorities are offering a $215,000 reward for anyone with information leading to an arrest in Suiter’s murder.

Watch NBC's news package on the matter below.