the man who killed her, bell ha a long criminal record. he had arrests in other states as well, but authorities let hi go and kept letting him go. he was homeless, he was a victim , he was part of a protected class. in than he killed somebody. here is the report on that. days after a brutal attack a beloved nurse lost her life. sandra shells worked at la county medical center for decades where she was highly respected and revered. she was allegedly assaulted thursday morning by a homeless man now identified by police as 48 -year-old. bell, they say they hit her 40 no apparent reason before knocking her to the ground and fractured her skull. they found him sleeping nearby about 90 minutes later and arrested him without incident. she was emergency room nurse walking alone to work. and now she s dead. another woman murdered by the homeless. no one in la is never going to