Joseph W. Pine, 31, was charged early Tuesday morning after police said he used "one or more knives" in an attack on his father.
Michael J. Pine, 63, was found dead on a neighbor's porch after police responded to a 3 p.m. 911 call from a neighbor reporting a disturbance between Pine and his son outside their home, according to police.
The preliminary police investigation indicates an altercation between the two took place inside the home on the 700 block of Bridlewreath Court in Mount Airy before Michael Pine ran outside while being pursued by his son, police said.
Emergency medical personnel determined Pine had sustained trauma to his upper body and was dead at the scene, according to the news release.
His body was taken to the Office of the Chief Medical Examiner in Baltimore for an autopsy to determine the cause of death.
Shipley said there is no clear motive, and it continues to be a part of the investigation.
Investigators believe the father and son were the only ones who lived at the residence. No one else was in the home when the altercation occurred, police said.
No police record of calls at the residence involving any type of domestic problems has been found, according to police.
A Maryland State Police Trooper found Joseph Pine standing outside his home when police arrived on the scene. Pine surrendered peacefully and was taken into custody, police said.
No information is available at this time regarding the recovery of the weapon or weapons used in the crime, according to the news release.
Police said Joseph Pine was taken to the Carroll Hospital Center for medical and psychological evaluations before he was released back into police custody to be processed at the Carroll County Detention Center.
The scene has been secured by uniform troopers and investigators from the Maryland State Police Homicide Unit, with assistance from the Criminal Enforcement Division. Crime scene technicians from the State Police Forensic Sciences Division will be processing the scene, according to the news release.