A fire off of Eureka Way caused a halt to rush hour traffic Thursday afternoon. The fire broke out at around 4:30PM off of Leisha Lane near the intersection of Buenaventura Boulevard and Eureka Way, forcing a closure of both thoroughfares. Traffic backed up quickly before the roads were re-opened shortly after 5 O'clock, though Buenaventura north of Eureka Way was still closed for a while. The fire was contained at one acre. The cause is unknown.