Volunteers from the Yolo County Search and Rescue Team look for evidence from the stabbing murder of Karim Abou Najm near Sycamore Park in Davis, Calif., on Monday, May 1.
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THE SACRAMENTO BEE VIA AP
A cyclist rides past a memorial of flowers, Monday, May 1, marking the location that Karim Abou Najm, a graduating senior at UC Davis, was fatally stabbed in Sycamore Park in Davis, Calif. It was the city's second deadly stabbing at a park in three days.
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THE SACRAMENTO BEE VIA AP
People view a memorial set up at the compassion bench in Davis, Calif., on Monday, May 1, to honor David Henry Breaux, 50 years old, who was found stabbed to death in Central Park.
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THE SACRAMENTO BEE VIA AP
Police investigate the site where a homeless woman was stabbed several times through the side of her tent near Second and L streets in Davis, Calif., Tuesday, May 2.
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THE SACRAMENTO BEE VIA AP
Police investigators are seen at the home of stabbing suspect Carlos Dominguez, 21, on Hawthorn Lane in Davis, Calif., on Thursday, May 4. A 21-year-old who had been a student at the University of California, Davis, until last week was arrested for allegedly stabbing three people, including two fatally, and sending fear through the quiet college community, city police said.
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THE SACRAMENTO BEE VIA AP
Police Chief Darren Pytel and Mayor Will Arnold, right, make an arrest announcement at police headquarters in Davis, Calif., on Thursday, May 4. Chief Pytel said Carlos Dominguez was taken into custody after 15 people called in reports of a person who matched the description of the suspect in a local park.
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YOLO COUNTY SHERIFF'S DEPARTMENT VIA AP
This photo provided by the Yolo County Sheriff's Department shows Carlos Dominguez, of Davis, who was arrested for the three stabbings. Police say Dominguez a 21-year-old who was a student at the University of California, Davis, until last week was arrested for allegedly committing three recent stabbings, including two that were fatal.