The incident happened on August 1, 2013 at a house along West Fourth Street in Frederick.
Police say the owner of the home came downstairs because of the noise and met the suspect, Charles Donald Mullen, 36, in the kitchen. The two men knew each other through a mutual friend.
Mullen pointed a gun at the homeowner, who attempted to fight back. Mullen then hit him over the head with the gun and strangled the homeowner until he lost consciousness. Police say when the homeowner woke up, he was bound to his bed.
Mullen stole two televisions, a set of car keys and $200 in cash. The homeowner was treated at Meritus Medical Center for his injuries.
Mullen pleaded guilty Tuesday to attempted second-degree murder, armed robbery, and use of a handgun during a crime of violence. The court sentenced him to 50 years, suspend all but 30 years, followed by five years supervised probation. Mullen was ordered to have no contact with the victim.
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