Petaluma twins arrested in homicide of 23-year-old Novato man

Adolfo Martinez, photo via Gofundme.

Petaluma police arrested a pair of twin brothers who allegedly attacked and killed a Novato man in downtown Petaluma, authorities announced Friday.

Alejandro G. Sanchez was arrested on suspicion of murder while his twin brother, Luis Sanchez was arrested on suspicion of committing an assault with a deadly weapon involving a baseball bat, police said. Both were booked into Sonoma County Jail.  

Police investigation connected the Sanchez twins to the murder of Adolfo Martinez Pena, a 23-year-old man from Novato. 

Police received reports about a man being assaulted with a baseball bat in the 100 block of Keller Street, early Sunday morning, officials said. 

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Pena was found on the roadway with multiple puncture wounds, police said. He was later pronounced deceased. 

Pena was the first homicide victim of 2022 in Petaluma, according to the Press Democrat

The exact cause of the killing is still under investigation, but friends told detectives that an argument escalated to the assault, the Press Democrat wrote. 

"We will always remember his bright smile that would always light up the room," wrote Sara Martinez, Pena's sister, who created a gofundme to raise funds for his funeral costs.

Anyone who witnessed, or has video of the incident is encouraged to contact Petaluma PD Detective Corie Joerger at 707-778-4372.