FREMONT -- A state appellate court has affirmed the conviction of a Menlo Park man in the 2006 shooting death of a Fremont pawnshop owner.

Troy Lee Powell, 31, was convicted two years ago of murder and three counts of second degree robbery in the fatal shooting of Ronald Morris, owner of Fremont Jewelry and Loan in the Irvington district. Powell was sentenced to 27 years to life in prison.

He appealed the conviction, contending that his confession was coerced and that police violated his Miranda rights while interviewing him.

Three judges in the state's 1st District Court of Appeal unanimously ruled Friday that Powell's arguments had no merit. The judges found that "Powell's confession was voluntary" and that "he was properly advised of his rights, that he waived them, and that he did not subsequently invoke his right to remain silent," according to court documents.

Contact Chris De Benedetti at 510-353-7011. Follow him at Twitter.com/cdebenedetti.