The shooting occurred around 12:05 a.m. near Route 24 between Hanson and Trimble roads, Sheriff's Office spokesman Edward Hopkins said. The man who was shot is expected to survive.
The incident began when deputies and paramedics responded to a call for an overdose victim in the 500 block of Crownwood Court, the Sheriff's Office said in a news release.
While en route at around 11:56 p.m., deputies were advised a 26-year-old man had taken an unknown quantity of pills and allegedly assaulted a female by pushing her down a flight of stairs, according to the release. The responding deputies were also advised the man may have been in possession of a large knife.
When deputies arrived, they saw a man in front of the residence holding a large machete-type knife, the news release continued. He then ran into the woods toward Route 24 and was chased by deputies.
As the man and one deputy approached Route 24, the Sheriff's Office said, "the man turned and started back toward the deputy again, refusing repeated orders to drop the knife."
"Fearing for his safety, the deputy then fired his duty weapon, striking the subject several times," the news release states.
The suspect has been identified as Brian Matthew Ogle, 26. He was treated at the scene and subsequently taken to the Maryland Shock Trauma Center in Baltimore. His wounds are not believed to be life threatening, the Sheriff's Office said.
Ogle is facing charges of second-degree assault on the woman as well as attempted first- and second-degree assault on a police officer, resisting arrest, failure to obey a lawful police order and weapons charges, Hopkins said. He will charged upon his release from Shock Trauma, according to Hopkins.
The woman, who police said lives in the 500 block of Crownwood Court, was taken to Upper Chesapeake Medical Center in Bel Air by ambulance for an evaluation related to her fall down the stairs. Her injuries appeared minor and are not life-threatening, the Sheriff's Office said.
She told police there was an altercation between her and Ogle, during which Ogle allegedly threw her down a flight of stairs. Ogle then reportedly left and she locked the door. Police said Ogle went to his vehicle, smashed out a window and retrieved a large, machete type knife. He was trying to kick in the door of the residence when he saw police arriving and ran away.
The deputy, whose name has not been released, is 34 years old and a seven year member of the Sheriff's Office assigned to the Patrol Service Bureau - Southern Precinct. In accordance with Sheriff's Office policies, he has been placed on administrative leave while the incident is investigated.
Hopkins said he will release the name of the deputy involved once investigators have interviewed the officer. He said the deputy has no prior police-involved shooting incidents on his record.
The incident remains under investigation by members of the Sheriff's Office Criminal Investigation Division. Route 24 between Hanson Road and Trimble Road was closed for about two hours while detectives processed the crime scene.
According to Bill Seiler, assistant director of media relations at the University of Maryland Medical Center, Ogle had not been released from the hospital and was listed in serious condition Thursday morning.
Hopkins said he could not release the number of shots fired by the deputy at Ogle, or the number of deputies on the scene during the incident. He said, however, that multiple units responded to the scene Wednesday.
The Harford Sheriff's Office was involved in three shooting incidents during 2013, two of them fatal.
In August 2013, a 19-year-old Bel Air man was shot to death when he confronted a deputy while inside a business near Forest Hill. In September, a 34-year-old Havre de Grace man was shot and killed by a deputy during a barricade situation.