>> RELATED: Man found guilty in Dayton double stabbing
A jury found him guilty of four counts of felonious assault and one count of aggravated robbery in December.
Portis was found not guilty of a second aggravated robbery charge.
The charges stemmed from a Sept. 24 double stabbing in the 80 block of Pointview Avenue.
One of the victims was Portis’ landlord, according to a court affidavit.
>> RELATED Suspect in Dayton double stabbing, police chase to appear in court
“Mr. Portis lured the victims to the basement under the guise that there was a problem with a fuse box,” said the affidavit.
He reportedly hit both men in the head with an unknown object.
One of the victims lost the tip of his finger and both suffered severe lacerations during the attack, according to court documents.
The men identified Portis as their attacker and were taken to Miami Valley Hospital in critical condition.
Around $1,100 was also stolen during the incident, according to a police report.
>> RELATED: Dayton stabbing suspect charged, arrested after police chase
The next morning, an officer attempted a traffic stop near Helena Street and Riverside Drive.
The suspect, who was later identified as Portis, refused to stop.
Officers used stop sticks to end a chase and took Portis into custody after a brief foot chase.
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