(USATODAY) -- Lee Boyd Malvo, who was 17 at the time of the D.C. shooting spree, is serving a life sentence without parole in Virginia for his part in the killings.
The Frederick News-Post quotes J. Wyndal Gordon, Muhammad's attorney, as saying Muhammad, who was executed Tuesday, had not had any recent contact with Malvo.
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Muhammad and Malvo are also suspected of murders in Alabama, Arizona, Louisiana and Washington state.
Testifying at Muhammad's murder trial, the Jamaican-born Malvo had described the pair's meticulous planning for the killings, including how his former mentor turned an old Chevrolet into a shooting platform.
He said Muhammad "made me a monster," CNN reported at the time.
"I'm not proud of myself. I'm just trying to make amends," Malvo said.
Malvo said Muhammad wanted to "terrorize" the nation's capital. He quoted him saying, "'The chickens come home to roost.' "
In 2007, the AP reported that Malvo called Cheryll Witz, daughter of one of the victims, Jerry Taylor.
"I need to apologize for what I've done to you and your family," Malvo told her.
Witz said she got the call from Malvo while shopping. "I was standing in the Costco bawling my eyes out," she said.
Witz told the AP that at one point Malvo broke down as he spoke.
"The first thing he said was, 'I tried to write a letter to you but I couldn't. I didn't know what to say,"' Witz said