( CNN ) After they found body parts inside a suitcase on a San Francisco sidewalk , police called him a suspect and accused him of murder . Now , the man who had been a focal point of the investigation into the grisly find is dead . Mark Andrus , 54 , died Saturday after admitting himself to a hospital the same day , San Francisco Police said . `` The case is under investigation with the cause and manner of death pending , '' the San Francisco Office of the Chief Medical Examiner said Monday . Andrus was arrested last month but never charged . He was released from custody 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 . `` At this stage of the case , the medical examiner has yet to determine a cause of death or issue a positive identification of the victim . Additionally , there are other key facts that are still unknown . 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 Monday . `` I do not have information on other suspects at this time , however this is still an open and active investigation and any information given will ( be ) looked at by homicide investigators . '' 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 contributed to this report .
Mark Andrus died on Saturday , the medical examiner 's office says . Police booked him on suspicion of murder after finding dismembered body parts in a suitcase . He was released from custody last week ; no charges were filed against him .