A woman was convicted of killing her malnourished 3-year-old grandson by hitting him with a board after he twice took food without her permission.

Displaying no emotion after a seven-day trial, Barbara Briggs, 42, was convicted Thursday of second-degree murder. She will be sentenced May 1.Keith Sims weighed 28 pounds and was scarred with cigarette burns and whacks from an electrical cord when he died in September.

Police said Briggs confessed that she beat Keith with a wooden bread board and threw him repeatedly to the floor after he had taken food from the refrigerator without her permission. On the night he died, he was caught raiding the pantry for a sugar sandwich.