A California man with a “420” head tattoo was captured in San Francisco on Saturday morning after allegedly decapitating a female relative and likely fleeing with her head, authorities said.

Luis Aroyo-Lopez, 24, was taken into custody after being on the run since police in Santa Rosa discovered the headless body of a woman inside a home on Thursday, the Santa Rosa Police Department said. Police said no details about Aroyo-Lopez’s arrest were immediately available.

Police officers in Santa Rosa had responded around 3:40 p.m. Thursday to a home in the 500 block of Pomo Trail for a report of a possible homicide. Arriving officers found a woman decapitated inside the home and noted that her head was not found at the residence.

Investigators learned that Aroyo-Lopez, who resided in Santa Rosa, was a relative of the victim and is alleged to have killed her before fleeing the scene, according to police.

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Aroyo-Lopez has a “420” and marijuana leaf tattoo on the left side of his head. (Santa Rosa Police Department)

Relatives said the victim was the grandmother of Aroyo-Lopez, FOX2 KTVU reporter Henry Lee posted on X.

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Aroyo-Lopez was recently released from state prison. He was incarcerated on charges of assault with a deadly weapon and weapons possession. (Santa Rosa Police Department)

Aroyo-Lopez, who has a large tattoo of “420” and a marijuana leaf on the left side of his head, was believed to have left the home with the victim’s head, which authorities believed may still have been in his possession while on the run.

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Police, however, did not immediately say whether the victim’s head was recovered following the arrest of Aroyo-Lopez in San Francisco.

Aroyo-Lopez has a violent criminal history, which includes jail time for assault with a deadly weapon and weapons possession charges. The charges were unrelated to the victim in the homicide incident.

The 24-year-old was recently released from state prison and placed on post-release community supervision, police said.

Additional details about the homicide and arrest of Aroyo-Lopez were not immediately provided. Police said more information would be shared later.