Wednesday, officers announced that 35-year-old Daniel Green was arrested Tuesday for the murder of Jon Hickey.
As WJZ reported, authorities responded to Hickey's locked apartment after receiving a request for a welfare check at the location. They found him dead inside his home, and an autopsy confirmed it was a homicide.
A former career firefighter from Prince George's County, Maryland has been charged with the murder of a firefighter in the Baltimore area.
Several Baltimore County volunteer fire companies posted on social media that Hickey had worked for them.
"He was a volunteer firefighter EMT on his way to becoming a professional firefighter like his grandfather in the BCFD", Hickey's family said in a statement.
The family went on to call on "the person that did this" to "please turn yourself in and to anyone that has any information please call the police".
There will be a service held for Hickey on Thursday at 1 p.m. Haight Funeral home in Sykesville.