(Ambridge, PA) Ambridge Firefighters report that they responded to a fire in the center of a four unit building on the 1500 block of Church Street early Wednesday morning. Ambridge, Baden, Harmony Twp., Aliquippa and Sewickley rapid intervention teams responded. The Beaver County Strike Team was also requested. Crews had the fire under control in just over an hour. However, extensive overhaul was required following the blaze. An investigation is ongoing.