( CNN ) The body parts found inside a suitcase on a San Francisco sidewalk were identified as the remains of a 58-year-old man who resided in the Bay Area , authorities said Wednesday . The man was Omar Shahwan of Vallejo , California , according to the San Francisco Office of the Chief Medical Examiner . Authorities are still investigating the cause and manner of death , according to Christopher Wirowek , acting medical examiner administrator . One person was arrested and later released in connection with the discovery of the dismembered body , but that person , Mark Andrus , 54 , died Saturday after admitting himself to a hospital the same day , San Francisco Police said . On Wednesday , police were n't disclosing what was the relationship between the dismembered man and Andrus , said San Francisco Police Lt. Albie Esparza . Shahwan 's `` ID helps us out a lot . However , we still need to wait for the cause of death , '' Esparza said . Andrus was released from custody last month after prosecutors said they did n't have enough evidence to prove a case against him . `` We are very disturbed by the facts of this case and are working with the San Francisco Police Department to secure the evidence necessary to prove this case beyond a reasonable doubt in a court of law , '' the San Francisco District Attorney 's Office said last week . `` Given the current state of the evidence , there is insufficient evidence to charge this suspect with murder . '' The dismembered body was discovered on January 28 when police were called to the South of Market district in San Francisco . Other body parts were found in a trash can less than a block from the main crime scene . `` Andrus was our primary person of interest who was subsequently arrested and booked for the crime , '' San Francisco Police Department spokeswoman Officer Grace Gatpandan said earlier this week . Jeff Adachi , a public defender who represented Andrus , said he was sorry to learn of his death . `` During the short time I represented Mark , I found him to be a kind and engaging person , '' Adachi said . CNN 's Steve Almasy , Tony Marco , Catherine E. Shoichet and Sam Stringer contributed to this report .
The remains are those of Omar Ali , 58 , of Oakland , California . Authorities are still looking at the cause and manner of Omar 's death . They are n't investigating the ties between Shahwan and a suspect , who 's now also dead .