A Chicago Public Schools elementary and highschool on the Northwest Side had been positioned on a comfortable lockdown Wednesday due to separate threats on social media. Principal Cliff Gabor of Mary Lyon Elementary School, 2941 N. McVicker Ave., in Belmont Central, wrote in a message to folks that college officers realized about “graffiti in the girl’s bathroom and also a social media post with a potential threat against the school” on Tuesday night. Chicago police stated the varsity was positioned on a “soft lockdown” Wednesday, however didn't present additional particulars concerning the menace. “We are taking this very seriously and have notified the Chicago Police and are working closely with them,” Gabor wrote. “In addition, out