( CNN ) -- It may have been a vicious murder or the unintentional result of a lover 's quarrel . Either way , the death of a Texas college professor stands out for the weapon the killer allegedly used : one of her own stilettos . Ana Lilia Trujillo , 44 , is charged with murder for striking Alf Stefan Andersson `` with a deadly weapon , namely a shoe , '' Houston police say in the official complaint against her . Andersson , a research professor from the University of Houston , had 10 puncture wounds on his head -- some as deep as an inch and a half -- and 15 to 20 puncture wounds along his face , arms , and neck , prosecutors say , according to CNN affiliate KTRK . Trujillo remains in jail , with bail set at $ 100,000 . When police arrived at Andersson 's apartment on Sunday , Trujillo , who had recently worked as a massage therapist , answered the door with blood on her clothes and hands ; Andersson was lying in the hallway face up , with a stiletto by his head , KTRK reported , citing court records . Trujillo had recently moved in with Andersson , and she told investigators that he grabbed her , and a struggle followed , KTRK reported . An official cause of death has not been determined , the Harris County Institute of Forensic Sciences told CNN . It was not immediately known who Trujillo 's attorney will be . CNN could not immediately reach a relative of Trujillo . Trujillo has said in the past that `` if anybody ever messed with her , '' she 'd get them with her shoe -- `` a big stiletto heel , '' Jim Carroll , former manager of a motel where Trujillo lived , told KTRK . In a prepared statement , the University of Houston said it was `` saddened to learn of the tragic death of Professor Stefan Andersson . Our hearts go out to his colleagues , family and friends during this difficult time . '' He was a full-time research professor at the school 's Center for Nuclear Receptor and Cell Signaling . CNN 's Brian Carberry and Mayra Cuevas contributed to this report .
Fine for Texas State is set at $ 100,000 . Police say the deadly weapon she used was a knife . Investigators found a stiletto next to the victim , CNN affiliate KTRK reported . The woman says the man grabbed her and a struggle ensued , according to KTRK .