The district attorney has confirmed murder charges will be filed against both brothers.
The younger brother has been identified as 17-year-old Omar Golamrabbi. His older brother, 22-year-old Hasib Golamrabbi, was arrested on Wednesday in Tracy.
Both brothers are expected to appear in court for their arraignment Friday. They're accused of the shooting death of their parents, Golam and Shamima Rabbi, who were found shot to death inside their home Sunday.
Police say there are no other suspects and no motive has been released.
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A source said chilling messages had been written on the walls and floor at the murder scene. According to the source, the messages said "Sorry, my first kill was clumsy," and "I can't be like you telling a lie. I can't love someone without telling them."
Earlier this week, police had said they wanted to find Hasib, but at that time he wasn't a suspect. Police say Hasib was arrested in Tracy and his brother was arrested in San Jose.
The younger brother is a student at Evergreen Valley High School.
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San Jose's ESUHSD statement regarding Evergreen Valley HS student (& his brother) arrested for murdering parents. pic.twitter.com/s8soEnw9pr— Matt Keller (@MattKellerABC7) April 28, 2016