A 29-year-old construction worker was arrested after allegedly causing a disturbance while armed with an improvised firearm in Las Piñas City early Tuesday, Aug. 11.Las Piñas police chief Col. Fermin Armendarez identified the suspect as alias “Ace,” a resident of Bacoor, Cavite.He was collared at about 5 a.m. in Barangay Pulanglupa Uno for alarms and scandals and violation of Republic Act No. 10591, the Comprehensive Firearms and Ammunition Regu…