we don't have all the facts, but maybe he was conducting an experiment involving wind resistance on running speed! Realistically it could be drugs or mental illness or something like that. Maybe it's a "you tube challenge" to strip naked and chase children! This could catch and happen countless times! At the interview a concerned if impatient Sherlock Holmes said he "wants answers" immediately. Keep your shirt on fella (HA!) the authorities will.....get to the bottom of this soon enough.