COLUMBIA – Police in Columbia, Lancaster County, are investigating two unconfirmed reports of shots fired on Friday night and early Saturday morning. In the first, a resident heard what he believed to be a single shot in the area of 2nd and Cherry Street at 8:05 p.m. The second which occurred around 2:30 a.m. had two people hearing what they thought to be several shots in rapid succession near the 800 block of Chestnut Street. Anyone with information is asked to contact Columbia Borough Police at 717-684-7735.