Officials learned of the threat through the Safe2Say anonymous messaging system.
Gov. Tom Wolf this week unveiled a plan to provide pardons for people who have been convicted of minor, non-violent marijuana crimes. It could affect thousands in the Lehigh Valley
Muhamad Diop is charged with making terroristic threats and harassment, authorities said.
State police in the Lehigh Valley reported 49 crashes and 28 DUI arrests during Labor Day weekend last year.
Lehigh University is warning students to be alert after an ex-student made threats against a group of students Sunday night.