A blast in Central Park severed the foot of a young man visiting New York from northern Virginia Sunday, witnesses said The NYPD’s bomb squad was investigating the area of the park near E. 68th St. and Fifth Ave. Witnesses said the victim stepped on a device or fireworks, causing the blast The explosion was heard by attendees of Elie Wiesel’s funeral on E. 61st St. — though there was no sign the blast was related to the memorial for the Pulitzer Prize winning Holocaust survivor