Officials believe an “explosive hobbyist” may have left behind the device that detonated when an 18-year-old man’s foot landed on it in New York’s Central Park on Sunday morning, creating a blast that resulted in a severe leg injury for the man There was no evidence the incident was terror-related and the working theory revolved around a person testing explosives perhaps in advance of the Fourth of July holiday, officials said “We believe this could have been put here as some sort of experiment,” NYPD Inspector John O’Connell said during a news conference
