This is an update from the Anne Arundel County Police on the July 9th double homicide in Severn.
On Monday, July 11, 2016, the Office of the Chief Medical Examiner performed autopsies on the deceased males. They ruled the cause of death as gunshot wounds with the manner being homicide for both males. The male discovered in the residence has been positively identified as Duwayne Thomas Mason, a forty two year old male from the 4000 block of Blue Wing Court, Columbia Maryland. The male discovered in the white pickup truck was positively identified as Timothy John Kerr, a forty year old male from the 3000 block of Hollands Cliffs Road, Huntingtown, Maryland. The relatives of both deceased persons have been notified of their deaths.
During the execution of a search warrant where the shooting occurred in the 7600 block of Sandy Farm Road, detectives located the following controlled dangerous substances: Suspected crack cocaine, powder cocaine, marijuana, amphetamine dextroamphetamine pills, alprazolam pills, suboxone film strips, and heroin. Also recovered during the search was a digital scale and $6,140.00 in U.S. currency. Detectives also recovered a loaded 12 gauge Mossberg shotgun.
John Matthew Garrison, a fifty-two year old male who resided at the residence located in the 7600 block of Sandy Farm Road was charged with the following: Possession of Cocaine, Possession of Crack Cocaine, Possession of Amphetamine Dextroamphetamine, Possession with Intent to Distribute Cocaine, Possession with Intent to Distribute Crack Cocaine, Possession with Intent to Distribute Amphetamine Dextroamphetamine, and Possession of a Firearm in relation to a Drug Trafficking Crime. John Garrison was being held at the Anne Arundel County Detention Center on a $350,000.00 bond.
The Anne Arundel County Homicide Unit is sorting through all of the evidence in regards to this investigation. They are piecing together the chain of events and circumstances that led to the shooting deaths of Duwayne Mason and Timothy Kerr. The Anne Arundel County Police Department continues to work in conjunction with the Anne Arundel County States Attorney’s Office to determine if any other criminal charges apply to this death investigation.
This is a very fluid and active investigation and the Anne Arundel County Police are urging anyone with information to come forward by calling the Anne Arundel County Police Homicide Unit at 410-222-4731. If people with information wish to remain anonymous they can also contact the Anne Arundel County Police Tip Line 410-222-4700 or Metro Crime Stoppers.