By the time Aho heard the news around 8:30 that morning, he said it “passed over his head.”

Aho continued to testify Thursday in the murder trial of Okemos resident Connor McCowan, who is accused of fatally stabbing Singler that night. McCowan, 19, allegedly drove to Singler’s home at Castle Point Apartments in Meridian Township to confront him after his sister, Shay McCowan, told him that Singler, her boyfriend at the time, had injured her during an argument.

Call records from Aho’s cell phone also show he received more than 20 calls from Connor McCowan the night McCowan is accused of stabbing Singler, according to police.

Chris Bergstrom, Connor McCowan’s attorney, questioned Aho regarding marijuana plants that were found in his closet when authorities searched the apartment. He addressed the 911 call Aho made to police the night Andrew was stabbed, when he said he found Singler stabbed in his apartment and did not witness the crime.

Aho then admitted he had lied to 911 dispatch, also refusing to give his address , because he did not want to risk getting caught by police.

He also asked Aho if he used drugs recreationally, which Ingham County Assistant Prosecutor John DeWayne openly objected to. Ingham County Circuit Court Judge Clinton Canady III said the information was irrelevant to the case.

Bergstrom then discussed a discrepancy between his initial interview with Meridian Township Police and his court testimony. In the interview, Aho told police he did not see a knife in McCowan’s right hand until after he stabbed Singler. In his testimony, he said he saw him walk into the apartment with a knife in his right hand.

Aho said the shock of rendered him incapable of remembering the details of the scene until later.

“This event was obviously very traumatizing,” Aho said. “When my mind rebooted, I could think more clearly.”