The Honolulu Fire Department is investigating three suspicious fires that occurred in the same area of Waiawa within an hour Thursday morning. Between 7:20 a.m. and 7:35 a.m., firefighters responded to two separate small fires, the first along Farrington Highway near Home Depot and the second inside a rubbish can at a bus stop near the Benjamin “Ben” Saguibo Laborer’s Apprenticeship & Training Center. Firefighters quickly extinguished both fires. At 7:54 a.m., 11 units and 35 firefighters responded to the third blaze — a two-alarm fire at a vacant property at 96-130 Farrington Highway.