An illegal immigrant with four prior arrests is accused of attacking and sexually assaulting a California woman, who later died.

Police have arrested 29-year-old Victor Aureliano Martinez Ramirez in connection with the heinous crime.

They say that the undocumented immigrant attacked 64-year-old Marilyn Pharis with a hammer and sexually assaulted her in her Santa Maria home. She died Saturday, eight days after the attack.

The Santa Maria Times reported that Ramirez pleaded not guilty on Friday to attempted murder, first-degree burglary with person present, assault with intent to commit rape, sexual penetration by foreign object and resisting a peace officer.

Authorities are now weighing whether he will face more charges in the wake of Pharis’ death.

Cops say Ramirez was arrested at a nearby home that he broke into following the attack.

The paper reports:

Deputy District Attorney Jennifer Karapetian said she is unable to comment yet on when or if the complaint against him will be amended to include a murder charge. Martin said Tuesday afternoon that he had confirmed Ramirez's immigration status with U.S. Immigration and Customs Enforcement. Ramirez had been arrested four times in the past by SMPD for minor crimes, most recently in May of 2014, Martin said. At the time of his arrest, he was on probation, which he is charged with violating.

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