Three people were arrested Tuesday afternoon after a high-speed chase ended in an accident that seriously injured one person and clogged up three lanes of Interstate 465 on the city's northwest side. The pursuit started near 79th Street and Harcourt Road when an off-duty officer saw a sport-utility vehicle driving recklessly. The SUV refused to pull over and the officer called for backup. The chase reached speeds of about 95 mph and ended about eight miles later just south of 71st Street when the SUV crashed into another vehicle. A person in the other vehicle was taken to the hospital in serious condition.