The El Cajon jury deadlocked Wednesday on two other counts of premeditated attempted murder for Eugene "Mickey" Remund, who drove hydroplanes in the 1970s and '80s and won the Thunderboat Regatta.
San Diego County prosecutors have until a hearing on June 10 to decide whether to retry Remund on those counts.
Remund set his ex-wife's garage on fire last June. Gale Remund was not hurt and called her daughter, who awoke to find her home on fire as well.
A defense attorney says Eugene Remund was found on the ground near his stepdaughter's house, after he shot himself in the head with a nail gun.
Copyright 2009 The Associated Press.
San Diegans are going online to raise money to help make ends meet amid a partial government shutdown prolonged by a impasse over President Trump's demand for a wall along the U.S.-Mexico border.
Waterfront Park in downtown San Diego played host to thousands of people demonstrating in the third annual Women's March, which also took place in dozens of other cities across the country.
Three people robbed a San Carlos jewelry store on Saturday afternoon, then fled before officers were able to arrive, police said.
A record number of County employees will be hitting the streets next week to help count homeless people in the region.
People choosing not to vaccinate are now a "global health threat," according to the World Health Organization.