A lawyer for the man convicted of killing singer Jennifer Hudson’s family said she will appeal the verdict.

Cook County Public Defender Amy Thompson has maintained throughout the trial 31-year-old William Balfour did not kill Hudson’s mother, brother and 7-year-old nephew in 2008, and that the case against him was circumstantial.

“The one constant in this case is that every piece of DNA evidence absolutely excludes William Balfour,” Thompson said. “The one person in all of Chicago who didn’t do it, is him. That’s what the evidence showed.”

A jury convicted Balfour, the former husband of Jennifer’s sister Julia Hudson, who prosecutors said killed the three family members in a jealous rage because his ex-wife was allegedly dating another man.

Balfour was convicted after 18 hours of deliberation across three days on all seven counts against him which included three counts of first-degree murder, one count of home invasion, one count aggravated kidnapping, one count residential burglary, and one count of possession of a stolen motor vehicle. Balfour now faces a life sentence.