One of two people arrested for trying to run over two teen brothers riding bikes in downtown San Mateo last summer was sentenced yesterday to 90 days in jail.

Prosecutors sought four months for Jason Ramiro Hernandez-Lopez, 24, of San Mateo, but Judge Craig Parsons imposed the lesser amount. Hernandez-Lopez had pleaded no contest in November to making felony threats in return for the four-month cap and the promise to reduce the charge to a misdemeanor halfway through successful probation.

On June 17, Hernandez-Lopez reportedly drove up behind one brother near Fourth Avenue and Grant Street and intentionally bumped the rear tire of his bicycle with his SUV. The boy did not fall but turned onto the sidewalk to get away and dropped his bicycle. Hernandez-Lopez then drove over the bicycle, dragging it down the street for several blocks.

Prosecutors say another person in the SUV, Dian Burton, 31, brandished a knife at the teenagers from the window.

Witnesses wrote down the SUV's license plate and they were later arrested. Hernandez-Lopez told authorities the boys were swinging chains at them as they drove by and denied striking the teen or dragging his bike.

Hernandez-Lopez has been free from custody on $100,000 bail.