OAKLAND -- Police are investigating the death of a 59-year-old woman found last Friday night in East Oakland as a homicide, police said Wednesday night.

The woman, Melinda Thomas, of Oakland, was found in the 1900 block of 26th Avenue shortly after 6 p.m. with trauma to her body. She died later Friday.

Police were tipped off Saturday that Thomas had been assaulted in the area and investigators later verified that information.

The Alameda County Coroner's office has not officially ruled the death as a homicide, although police continue to investigate the death as such. The killing is the 83rd in Oakland this year.

Police and Crime Stoppers of Oakland are offering up to $10,000 in reward money for information leading to the arrest of the suspect. Anyone with information should call police at 510-238-3821 or a tip line at 510-773-2805.

Contract Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.