OAKLAND -- Two robbers who kicked in a door to a 98-year-old woman's house in East Oakland, holding her captive for two hours before fleeing with a television and cash after unsuccessfully trying to pull her rings off her fingers are being sought by police, investigators said Friday.

Officer Omar Daza-Quiroz, the lead investigator, said targeting such a defenseless victim "is vicious and cowardly. The suspects should be ashamed."

Police would not identify the victim.

The robbers kicked in a door to the woman's house on Eighth Avenue near East 24th Street about 11:30 a.m. Thursday while she was home alone.

They confronted the woman and at first tried to pull her rings off her fingers, police said.

When that failed, the robbers took cash from her and a necklace she was wearing, police said.

Forcing the woman to stay in one room, the robbers then spent two hours searching the house before finally leaving with a television set and other items.

The woman suffered cuts and bruises to her hands but refused medical treatment, authorities said.

One of the robbers was described as black, about 30 years old, 5 feet 10 with a skinny build and dark complexion and wearing black clothing.

Police and Crime Stoppers of Oakland are offering up to $5,000 in reward money for information leading to the arrest of the suspects. Anyone with information may call police at 510-238-3326 or Crime Stoppers at 510-777-8572.