OMAHA, Neb. (AP) — A Douglas County jury has convicted a 61-year-old man of murder in Omaha.

On Monday James Cotton was found guilty of killing 24-year-old Trevor Bare and of three other crimes. Prosecutors say Cotton shot Bare during an argument outside Bare’s apartment on Aug. 7 last year. Cotton’s attorney says he will be filing an appeal.

Cotton’s attorney had been criticized for temporarily hiring a witness in the case. Cotton told the judge last week, however, that he understood the ramifications of what could be seen as ethical violations by his attorney but said he wanted to continue with the trial.

His attorney, Travis Penn, has said he researched ethics rules and didn’t see that he wouldn’t be allowed to have a business agreement with a witness.