EL CERRITO — An arrest warrant has been issued for the adopted daughter of a 90-year-old woman whose remains were found inside her home Dec. 2, authorities said this week.

Alicia Osibin, 50, is being sought in the fatal shooting of Mary Osibin, who was reported missing Nov. 27 by out-of-state relatives who had not had contact with her for some time, police said.

El Cerrito police Capt. Paul Keith said that when police began their investigation neighbors told them the two women, who lived in the 1000 block of Leneve Place, had moved away but were expected to return at some time.

As the investigation continued police eventually searched the premises and found Mary Osibin”s remains concealed in a trash barrel, Keith said.

An autopsy by the Contra Costa County Coroner”s Office confirmed the remains were those of Mary Osibin and that her death was by gunshot. Police have obtained a probable cause arrest warrant for Alicia Osibin accusing her of murder.

Keith said police believe the homicide occurred several months ago. Investigators have not established a motive yet, he said.

Authorities said Alicia Osibin was adopted as a child by Osibin and her now deceased husband in Louisiana, and came to El Cerrito with them decades ago.

Her current whereabouts are unknown, police said.

Keith said Alicia Osibin told neighbors in August, the last time she was seen, that she might be traveling to Arizona or Southern California and police believe she might be in possession of a gun.

Authorities said Alicia Osibin has been employed in the cleaning industry and may have owned her own cleaning business.

Alicia Osibin is described as heavyset, multiracial, about 5-foot-8 and has worn glasses.

She is known to rent vehicles from different companies for several months at a time, police said.

Anyone with information about her is asked to call police at 510-215-4400 during normal business hours and 510-233-1234 after hours.