3 of 4 victims in deadly OC stabbing rampage identified

Authorities in Orange County have identified three of the victims in Wednesday's deadly stabbing rampage in Garden Grove and Santa Ana.

Pascual Rioja Lorenzo, 39, of Garden Grove was killed outside of a Subway restaurant in Santa Ana. Robert Parker, 58, of Orange was killed at a 7-Eleven in Santa Ana.

Helmuth Hauprich, 62, years old of Garden Grove was also identified. He was one of the two victims that were attacked at an apartment complex. Hauprich emigrated from Romania, according to a GoFundMe set up by a family member for funeral costs.

Helmuth Hauprich (Helmuth Hauprich GoFundMe)

One more victim has yet to be identified pending next of kin notification. Two others remain hospitalized.

The suspect, 33-year-old Zachary Castaneda, who police say is a documented gang member with an extensive criminal history, was arrested and is being held in lieu of a $1 million bail.

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Castaneda's crime spree began with a reported burglary just after 4 p.m. at the same apartment complex where he lived and ended with his arrest at about 6:26 p.m., according to investigators.

Police said the suspect and three of the slain victims are all Hispanic men and said robbery appeared to be the primary motive for the attacks but that could change as new evidence is collected in this ongoing investigation.


  • 4:09 p.m. - Residential burglary of an apartment reported at 12612 Jentges Avenue. The suspect was unknown.
  • 4:23 p.m. – Armed Robbery at a bakery located at 13040 Chapman Avenue. The suspect was reportedly armed with a gun. Loss was cash.
  • 5:04 p.m. – Stabbing was reported at 12612 Jentges Avenue. Same location as the residential burglary reported at 4:09 PM. Two adult male victims died from multiple stab wounds. One male victim is 62-years-old. The other male victim has not been identified.
  • 5:39 p.m. – Armed Robbery at Cash & More business located at 12845 ChapmanAvenue. Loss was cash.
  • 6:06 p.m. – Armed Robbery and attempted murder at Best One Insurance located at 12843 Harbor Blvd. A 54year-old female employee was stabbed numerous times. Loss was cash. Female victim is in critical but stable condition at a local trauma center.
  • 6:09 p.m. – Attempted murder at the Chevron Gas Station located at 13321 Harbor Blvd. A 44-year-old male victim was stabbed and had his nose nearly severed off. The victim is in stable condition at a local trauma center.
  • 6:16 p.m. – A male was stabbed in killed inside the Subway restaurant located at 3835 W. First Street, Santa Ana.
  • 6:25 p.m. – A male security guard was stabbed and murdered at the 7-Eleven store located at 103 S. Harbor Blvd., Santa Ana. The suspect took the victim’s handgun after stabbing him numerous times. The suspect was taken into custody by undercover Garden Grove Police Department detectives.

 Castaneda will be arraigned in court on August 9.